Karst
The field guide

Every cave, in depth

Not just a pin on a map. Each cave has the things that actually decide a trip: difficulty, surveyed length, wet or dry, orientation, passage size, temperature, hazards, gear notes and access — written for cavers, by cavers.

The Explore screen — searchable, filterable cave cards
Explore
A cave detail page with facts, hazards and access
Cave detail

Built by the people who cave it

Real field data

Difficulty, length, environment, hazards, gear, temperature and access for every cave — the stuff a guidebook gets right.

Member photos

Add photos to a cave's carousel. GPS/EXIF is stripped automatically on upload, so a photo can never leak a location.

Condition reports

Dated, structured status — gate locked, flooded, seasonal bat closure — so you know before you drive out.

Comments & replies

Public tips, beta and current conditions per cave, with likes and threaded replies.

Private trip log

Log your visits — caves, distance underground, time underground — in a journal only you can see.

Saved caves

Heart any cave and find it again on your profile, synced across your devices.

Free to browse. Better with an account.

Reading the guide is open to everyone. A free account — just your phone number — lets you save caves, post conditions and comments, add photos, keep a trip log, and join a grotto to unlock member-only locations.

Start exploring