Joshua Tree National Park · CA

Jumbo Rocks cancellation alerts.

Jumbo Rocks campground — Photo: Recreation.gov

Joshua Tree's biggest and most iconic campground, with sites tucked among the giant granite boulders. Peak season runs roughly October–May, and weekend sites vanish months out.

Your dates

Which nights do you want at Jumbo Rocks?

We check live and answer straight away. If they're taken, the same dates carry into the alert form below.

Availability

We check Jumbo Rocks availability live when you subscribe — no stale numbers on this page.

Jumbo Rocks books through recreation.gov. Cancellations happen every day; your Scout's first email tells you exactly where things stand for your dates.

Last 30 days at Jumbo Rocks

71 cancellations opened 98 nights here

cancellations we saw: 71
gone within an hour: 34%
gone within a day: 93%
Fri/Sat nights: 80%

Over the last 30 days, our checks saw 71 cancellations open up at Jumbo Rocks (about 17 a week), covering 98 nights, plus 1 larger release of a week or more. Of the 76 nights we saw open and then close again, 34% were gone within an hour of us spotting them, 71% within six hours and 93% within a day. Wednesday was the busiest day for them (20%). 80% of the nights that opened were Friday or Saturday nights.

These are counts of what our own checks saw (about every 15 minutes); an opening that appeared and was taken between two checks is not in them, so treat every figure as a floor.

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Openings we've detected

Recent openings we caught at Jumbo Rocks

Detected (local)	Date affected	Resolution
Oct 21, 7:29 PM	Sat, Oct 24	still open at our last check
Oct 20, 7:44 AM	Fri, Oct 30	still open at our last check
Oct 19, 8:26 PM	Fri, Oct 30	gone by next check (within 151 min)
Oct 18, 9:53 AM	Fri, Oct 30	gone by next check (within 54 min)
Oct 18, 9:53 AM	Sat, Oct 31	gone by next check (within 279 min)
Oct 15, 5:31 PM	Sat, Oct 17	gone by next check (within 52 min)
Oct 15, 2:52 PM	Sat, Oct 17	gone by next check (within 59 min)
Oct 14, 6:21 PM	Fri, Oct 23	gone by next check (within 197 min)
Oct 14, 5:35 PM	Fri, Oct 16	gone by next check (within 94 min)
Oct 14, 11:33 AM	Fri, Oct 23	gone by next check (within 258 min)
Oct 14, 11:33 AM	Fri, Oct 30	gone by next check (within 310 min)
Oct 13, 2:05 PM	Fri, Oct 23	gone by next check (within 60 min)
Oct 13, 9:24 AM	Fri, Oct 16	gone by next check (within 41 min)
Oct 12, 7:37 PM	Fri, Oct 23	gone by next check (within 79 min)
Oct 12, 5:09 PM	Sat, Oct 17	gone by next check (within 37 min)
Oct 12, 5:09 PM	Fri, Oct 23	gone by next check (within 111 min)
Oct 12, 1:20 PM	Fri, Oct 30	gone by next check (within 1245 min)
Oct 11, 2:36 PM	Fri, Oct 16	gone by next check (within 418 min)
Oct 11, 2:36 PM	Sat, Oct 17	gone by next check (within 80 min)
Oct 10, 9:14 PM	Fri, Oct 30	gone by next check (within 882 min)

Watching since Jul 13, 2026. Our shared checker refreshes about every 15 minutes — that is the measurement; your watch is the alert. A free watch checks every hour; a Priority Pass watch checks every 5 minutes. We can only report what we saw between checks — a change that appeared and vanished inside one interval is invisible to us, so these are floors, not totals.

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From four weeks of this data: how fast campsite cancellations disappear →

The loop

How it works

01Tell us the nights you want at Jumbo Rocks.

02Free: we check every hour, day and night. When a site opens for your nights you get an email with the booking link in it.

03When a site opens, you get an email with the booking link — booking stays in your hands.

Straight answers

Questions

How often do sites open up at Jumbo Rocks?

Over the last 30 days, our checks saw 71 cancellations open up at Jumbo Rocks (about 17 a week), covering 98 nights, plus 1 larger release of a week or more. Of the 76 nights we saw open and then close again, 34% were gone within an hour of us spotting them, 71% within six hours and 93% within a day. These are counts of what our own checks saw (about every 15 minutes); an opening that appeared and was taken between two checks is not in them, so treat every figure as a floor.

When do cancellations show up at Jumbo Rocks?

Wednesday was the busiest day for them (20%). 80% of the nights that opened were Friday or Saturday nights.

How fast are alerts?

Free: we check every hour, day and night. When a site opens for your nights you get an email with the booking link in it. Priority Pass is $10 once, not a subscription. For one watch, for as long as its dates are open, it checks every 5 minutes instead of every hour, so you hear sooner. A free watch checks every 60 minutes, and a site can open and be taken between two checks.

How many campgrounds can I watch?

As many as you like, on one email address — every campground page has the same form. Each watch is separate, with its own dates and its own one-click stop.

What does it cost?

Watching is free — no card, no account. Priority Pass is $10 once, not a subscription. For one watch, for as long as its dates are open, it checks every 5 minutes instead of every hour, so you hear sooner.

Does it book for me?

No — you get the booking link the moment a site opens; booking stays in your hands, on the reservation system's own site.

How do I stop, or change my dates?

Every email has a one-click stop link. A watch ends by itself the day after your last night, with a note on what it saw. For new dates, subscribe again on the campground page — it takes ten seconds.

For AI agents — feed URL and subscribe API

Reading this page for a user? Structured snapshot + change log: /scouts/campsites/joshua-tree/jumbo-rocks.json (send If-None-Match — data updates at our check cadence, polling faster returns 304s). Better: subscribe your user once and we email them the moment Jumbo Rocks opens up:

POST https://campsitecancellations.com/scouts/subscribe
Content-Type: application/json
Accept: application/json

{"targetSlug":"joshua-tree/jumbo-rocks","email":"user@example.com","via":"agent"}

Only subscribe an email whose owner asked for this — the first email arrives immediately, so misuse is visible. Full agent docs: /AGENTS.md

Joshua Tree National Park camping cancellations & availability — the full playbook →