Day Capsule · Vanowen Street → the Cave of Munits → home by half past nine

The Cave
Mouth

Stand on the floor of a sandstone chamber and turn around: the mouth is a tall black cutout, and the sky inside it — pale before sunrise on the early start, white soon after it — is the only light in the frame. That is the Cave of Munits, a narrow slot in the cliffs on the southwest side of Castle Peak, reached up a fire road from the last house on Vanowen Street. The cave mouth and what is below it is the day. The roof above it is one frame, and not a frame for one person.

When
Any morning · daylight hours (MRCA)
Light
06:38 civil · 07:03 up · 18 Oct
Moving on
Driving from the Westside · ~49 mi round
Frame
Hasselblad X2D II + 38V · B&W
01

The Threads

what the day is really about

This capsule exists so a cave is in the pocket beside the slab. It stops at the base of the mouth on purpose: the window, the balcony and the walkway over the roof are a two-person morning, and a page that pretends otherwise is the kind of page the fire department reads about afterward.

Mouth
Taller than wide
The Cave of Munits is a slot in the sandstone cliffs on the southwest side of Castle Peak, in the Simi Hills at the west end of the San Fernando Valley, taller than it is wide and open at the top where the roof has let go. The way in is a short ramp below the left side of the mouth — hikespeak calls it a knobby incline, nobody official describes it, and the page allows for a scramble with hands and no gear. The subject is the shape of the opening — a black figure on a white ground, the one line of the cliff edge crossing the corner.
Light
The sky, not the rock
Sunrise is at 101° on 18 October, up the Valley to the east-southeast, and the cave appears to look the other way — inferred from its place on the southwest side of the peak; confirm it with a compass below the ramp. If so, the mouth sits in its own shadow for the first hour and the light is the sky over the ridge behind it, already white at civil light. Stand below the ramp with the mouth above you and expose for the sky; the cliff goes to charcoal and the slot to black. The dip of the beds is not published, and the page does not pretend to know it.
Roof
One frame, two people
From the back of the chamber a window some twenty-five feet up the wall opens onto a ledge, and from the ledge the only way on is a rock walkway across the roof of the cave beside the skylights, then loose dirt and boulders to the ridge and the summit. That walkway with the skylights in frame is the picture everyone wants, and it is marked avoid alone here: a cliff on both sides, use-trails that fork, and a 2023 helicopter hoist from a cliff near this cave. Bring a partner on a different morning, or keep the page as it is.

And under it, one rhythm: black → white → gray. The slot against a sky already white as you arrive just after sunrise, the chamber looking out at it, and by a little after eight the sun is high enough to put gray into the cliff and the shape is gone.

Park at the end of Vanowen. Walk in when the preserve’s daylight hours begin. Put the sky behind the slot and stay below the window.

Teaches · Diagonal — after Catherine Opie · Lucien Hervé

02

The Map

where it all is · tap a point for its leg

Open the whole day in Google Maps ↗ — in order: the west end of Vanowen Street. It routes from wherever the phone is, and every spot below links its own leg the same way.

Tap any point for the leg it belongs to. One trailhead at the end of a residential street, one cave a fire road and a use-trail above it, about forty-nine miles round — shorter than the Chatsworth day, and the only one in the series with a street for a trailhead.

06:20
leave the Westside
07:00
the west end of Vanowen; walk in
07:03
sunrise behind the ridge
07:30
the mouth, in its own shadow
08:20
back down the fire road
09:20
home

The trailhead is a city park and the cave is not: about 0.6 mi in you cross a fence into the MRCA’s Upper Las Virgenes Canyon preserve, whose page opens the trails during daylight hours and charges $5 only at the Victory trailhead, not here. So this plan walks in from the street at 07:00 and crosses that fence after the 07:03 sunrise. Being at the mouth at civil light, 06:38, is before daylight hours on the preserve side, and is the exception, your call. The city’s own page for El Escorpión Park would not load, so its hours, dog rule and closures are not verified. A Red Flag Warning closes MRCA parks at director discretion.

03

The Day

two legs · the walk-in, then the mouth and the way home

A day trip's unit is the leg, not the day — each carries a locator map, its theme, and an energy read. A gold pill on the clock means that time belongs to someone else: a door that opens or a slot that was booked. Everything unpilled is a suggested shape, not a schedule.

Leg I · Walk-in — Vanowen Street to the cave
Forty minutes on the freeways, a residential street that ends at a chain gate, and a fire road as the sun comes up.
Leg 1 · Walk-in
06:20–07:30
Fire road
steady

Be at the base of the mouth while it is still in its own shadow.

06:2040 min
Leave · north on the 405
  • The 405 north → the 101 west → Valley Circle → Vanowen St west to its end · ~24 mi, ~40 min from the Westside
  • light at this hour
  • bring coffee — the last stretch of West Hills is houses, not cafes

Over the Sepulveda Pass and west along the 101 to the last exit in the Valley, then north and west through West Hills to where Vanowen runs out at the hills. The route is OSRM’s free-flow figure and nothing else; a Sunday at 06:20 is about as free as it flows.

07:0030 min
The end of Vanowen · park, walk inWalk
  • a chain gate across the dirt road where Vanowen ends; pedestrians walk around it · street parking at the bend, no lot · no fee stated — all unverified, from hikespeak
  • a city park at the gate; the MRCA preserve past the fence, 0.6 mi in, open during daylight hours
  • on foot up the fire road, then the use-trail · ~0.8 mi, ~25–30 min, uphill all the way
  • sunrise 07:03 · no headlamp needed on the default start

A residential street that stops at a chain gate across a dirt road; walk around the gate (unverified). Park at the bend without blocking a driveway, quietly; it is seven in the morning on somebody’s street, and the city’s own hours for the park could not be read. The fire road climbs west, past the fence into the preserve, and the Cave of Munits Trail leaves it on the right as a use-trail up to the base of the cliff: 1.24 km on OSM’s own trace, about 250 ft of gain by hikespeak’s count, which the page carries as unverified. Uphill at that grade it is twenty-five to thirty minutes, not twenty. Fine alone. On the early start the same walk is by headlamp from 06:10, and civil light at 06:38 arrives as you reach the cliff, enough to see the trail but not the holds on the ramp. Stop at the base of the mouth.

Leg II · Mouth — the slot, the chamber, and home
The mouth in its own shadow with the sky white behind it, the chamber looking out, and the short drive home.
Leg 2 · Mouth
07:30–09:20
Sandstone
strong

The whole day is the first hour after sunrise, below the window.

07:3030 min
The Cave of Munits · below the ramp, then insideAnchor
  • free · MRCA preserve, daylight hours by its page
  • sun 5° up at 07:30, 11° at 08:00, east-southeast, behind the ridge
  • the mouth in its own shadow (inferred); the sky over the ridge is the light
  • the ramp into the mouth · use judgment; never climb it in the dark

Stand below the ramp with the mouth above you and the ridge line crossing the frame at a corner. The sky is white and the cliff has no direct light on it yet (inferred), so this is the print with the least work in it: expose for the sky at plus a stop, let the slot go black and the cliff to charcoal, and shoot the vertical at 38mm with the opening as one shape. Then the ramp: a few moves with hands on rock, which is use judgment — fine in daylight with dry rubber, and never climbed in the dark. Into the chamber, turn around, and shoot the mouth from inside as a cutout with the sky in it and the floor as the base of the picture. Stay below the window. The shape holds until a little after eight, when the sun starts putting gray into the cliff.

08:0020 min
Inside · the skylights, if they take the sun
  • from the cave floor, looking up
  • the sun is 11° up at 08:00, about 14° at 08:20; whether a shaft reaches the floor this early is not verified
  • pigeons nest in the cave — not verified; look before you lean on anything

The roof is open in places and the openings are what everyone photographs from above. From the floor they are white holes in a black ceiling, and if the sun finds one early enough there is a shaft with dust in it. The page does not know when, or whether, that happens in October; the light tables put the disc above the horizon at 07:03 and the ridge to the east adds something to that. Give it twenty minutes from the floor and no more. Nothing on this beat needs a hand above the chamber.

08:2020 min
Back to the car
  • on foot, down the use-trail and the fire road · ~0.8 mi, ~20 min downhill
  • the cliff has gone gray; the frames are on the card

Back down the ramp facing the rock, then the use-trail to the fire road in full light. The residential street is awake now; be the person who parked quietly.

08:4040 min
Home · the 101 to the 405
  • Vanowen St east → Valley Circle → the 101 east → the 405 south · ~25 mi, ~40 min
  • the 101 is filling eastbound; still fine on a Sunday morning

Back the way you came with the sun ahead of you and the day still whole. Forty-nine miles round, no fee stated, and a cave in the pocket.

04

The Spots

where to stand · what the light does · who built it

One anchor. The cave card is the day; the roof frame on it is marked avoid alone and has no clock. Tap the spot’s map for driving directions to the end of Vanowen.

Cave of Munits07:30 – 08:20the slot under Castle Peak · El Escorpión Park
Stand
Below the ramp, looking up, with the ridge line leaving the frame at a corner; then on the chamber floor looking out. The ramp into the mouth is a few moves with hands on rock: use judgment, and do not climb it in the dark. Not above the window. The roof frame is reached by climbing boulders at the back of the chamber to a window about twenty-five feet up, onto a ledge, then a rock walkway across the cave roof beside the skylights with the drop on both sides, then loose dirt and boulders to a ridge gap and the summit: use-trails fork, the descent is very steep, and the LAFD hoisted a hiker and her dog from a cliff near this cave on 4 March 2023. Avoid alone. With a partner, on another morning, with the walkway dry.
Light
Civil light 06:38, sunrise 07:03 at 101°, computed for 18 October and moving about a minute a day. The cave is on the southwest side of the peak, so the mouth should be in its own shadow for the first hour (inferred; confirm with a compass) and the light is the sky over the ridge behind it; the dip of the beds is not published. On the default start you arrive about 07:30 with the sun 5° up and the sky already white; the shape holds until a little after eight. The pale civil-light sky, from 06:38, belongs to the early start.
Frame
The slot as one black shape on a white ground, vertical, the cliff edge crossing one corner, nothing on the ground. Expose for the sky at +1 and let the rock go to charcoal; one more at −1 to keep the rim of the opening. From inside: the mouth as a cutout with the sky in it, the floor as the base. The fourth frame — the roof walkway with the skylights in it, from the ledge — is on the page so it is not pretended away, and is marked avoid alone.
See
A tall, narrow sandstone cave in the Simi Hills with its roof open to the sky, under a peak OpenStreetMap also names Kas’ele’ew Picacho.
three frames to come back with
The mouth from below the ramp, one black slot on a paper sky, vertical
The mouth from the chamber floor, a cutout of white sky, the floor as the base
A skylight from the floor, a white hole in a black ceiling, a shaft if one comes
The west end of Vanowen St street parking at the bend, no lot, no fee stated — not verified, from hikespeak · a chain gate across the dirt road, walk around it (unverified) · 0.8 mi and about 250 ft up to the base of the mouth, ~25–30 min, the gain unverified Directions
05

If the Day Turns

two speeds · pick one on the morning

Every leg below carries the same day at two speeds. Dawn is the early, light-driven version; Slow starts late, drops a stop and keeps the good one. Steady is the shape written above. None of them is the failure case — pick on the morning, from how the day actually feels.

The mouth
Dawn
The exception, your call: park at 06:10 and walk in by headlamp to be below the ramp at civil light, 06:38, before the preserve’s daylight hours. The twenty-five minutes before the disc clears the ridge are when the sky is pale and the slot is black. Shoot the outside first, and wait for enough light to see the holds before the ramp.
Steady
Park at 07:00, at the base of the mouth by 07:30, outside then inside until 08:00, the skylights until 08:20, back at the car by 08:40.
Slow
Leave at 07:30 and shoot the mouth in full daylight from below only. The cliff has gray in it by then, but the shape still reads as a drawing, and you skip the ramp.
The roof
Dawn
Not alone, not today. The window, the ledge and the walkway over the roof are the frame everyone wants, and the helicopter came to a cliff near this cave. If the roof frame matters, it is a second morning with a partner, dry rock, and the descent read on the way up.
Steady
Stay on the chamber floor. The skylights from below are a frame; from above they are a decision you make with someone else.
Slow
Skip it entirely. The capsule is the mouth and what is below it, and a page that says so is the point of the page.
06

Before You Go

the camera card, the big-day gear, and the one thing to check the night before

Camera

  • Hasselblad X2D II + 38V, handheld — mode A, f/8, stabilizer on
  • ISO 400 inside the chamber, ISO 200 below the ramp before the disc, ISO 50 after; +1 on the dial for the sky
  • overexposure warning on — stripes on the sky are the plan, stripes on the cliff are not
  • one more at −1 and −2 for the rim of the opening

Body

  • Headlamp for the fire road and the chamber; the inside is dark at any hour
  • Solid shoes with rubber that grips — sandstone, and the ramp is a few moves with hands
  • A layer; the chamber holds the night’s cold
  • Water; there is nothing at the trailhead or above it

Big day

  • The roof is a two-person morning, not a line on this list. A partner, dry rock, daylight on the walkway, and the descent read before the climb
  • The route, honestly: boulders at the back of the chamber to a window about twenty-five feet up, a ledge, a rock walkway over the roof beside the skylights, then 0.2 mi of loose dirt and boulders to the ridge gap and the summit; use-trails fork and the way down is very steep — all from hikespeak and snwburd.com, none of it from an operator
  • Nothing on this page needs it; the frame from the ledge is the only reason to be up there, and it is marked avoid alone

Logistics

  • Check the MRCA Red Flag notice the night before on a windy week
  • The MRCA opens the preserve during daylight hours; the plan walks in at sunrise, and the civil-light start is the exception
  • The city’s El Escorpión Park page did not load: hours, dogs and closures not verified
  • No bee or rattlesnake reports found for the cave; look before you put a hand on the ramp anyway
Check the MRCA Red Flag noticethe MRCA closes its parks at director discretion during a Red Flag Warning — the one thing that closes this day
Decide, before leaving, that the roof is not todaythe window and the walkway are a partner’s morning; decide it at the kitchen table, not at the back of the chamber
Headlamp in the bag, batteries freshthe chamber is dark at any hour, and the early start walks in by it
Compass app readythe first thing to do below the ramp is confirm which way the mouth looks; the dip is not published
Camera set at the tablemode A, f/8, ISO 200, +1, stabilizer on, overexposure warning on — nothing to fiddle with in the dark
•

What You Got

the frames that survived the edit

The geotag gets each frame close to where it stood — close, not exact; the last hundred yards are always a hunt. What a machine can't do is the part below: which ones survived, and whether the day was worth the drive.

The frame of the day.

—

Did the mouth read as one black shape, or did the sky need another stop?

—

Was the walk-in twenty-five to thirty minutes, or should the page say otherwise?

—

Did a shaft reach the floor, and when?

—

•

After

what the day taught

Is this the cave to keep in the pocket beside the slab?

—

Which of the two mouths was the one — outside looking up, or inside looking out?

—

How long was the fire road from the gate, really, and was the parking fine?

—

Is the roof a second morning with a partner, or is the page right that it is not a frame worth that?

—