Category
Cave Geology
How Caves Actually Form: A Field Guide to Karst and Speleogenesis
Most of the world's great cave systems owe their existence to one unglamorous process: slightly acidic water slowly dissolving limestone over hundreds of thousands of years. Here's how it actually works.
Reading a Cave Survey: Compass, Clino, and Tape, Explained
Every cave map starts as a string of raw numbers — a bearing, an angle, a length — read off three simple instruments, one leg at a time. Here's how those readings become a map.
Foul Air Underground: What Cavers Should Know About CO2 and Ventilation
Bad air is a real, if uncommon, caving hazard — and unlike a slippery ledge or a loose rock, it's completely invisible until it's already affecting you. Here's how it happens and how cavers manage the risk.
What a Stalagmite Can Tell You About Ancient Climate
A slice through a stalagmite is a layer-by-layer archive of the rainfall and temperature above the cave, sometimes reaching back hundreds of thousands of years. Here's how scientists actually read it, and why an untouched formation is the only kind that can still be read.