Cave World Map
Travel guides & inspiration
Latest posts
Sea Caves and Coastal Karst
Wave-cut sea caves, hybrid karst-sea caves, and the geological collisions where the ocean meets limestone.
Gypsum Caves and Selenite Crystals
Why some caves grow crystals instead of stalactites — the chemistry of gypsum-dominated cave systems from Naica to Lechuguilla.
Anatomy of a Lava Tube
Lavacicles, benches, breakdown rooms and skylights — what you see inside a lava tube and how it formed.
How Glacier Caves Form
Moulins, meltwater channels, and subglacial rivers — the dynamic blue ice caves of Iceland, Norway, and Alaska.
Read more →Bioluminescence in Caves
The chemistry of cave glow-worms, fireflies, and lesser-known luminous organisms that turn dark chambers into living constellations.
Read more →Vertical Caving and SRT Gear
The harness, croll, jumar, descender, and rope — what equipment vertical cavers use and how it differs from climbing kit.
Read more →Cave Conservation and Microclimates
Why CO2, humidity, and temperature changes matter for caves — and how visitor numbers, lighting, and air movement are managed.
Read more →Photographing Inside Caves
Long exposure, off-camera flash, manual focus — the technical fundamentals of capturing cave photography that does justice to the subject.
Read more →Cave Diving Safety Essentials
The five rules that have saved cave divers' lives — guideline, gas reserve, depth, lights, and progressive training.
Read more →Stalactites vs Stalagmites
How to remember the difference, how they form, and the rare circumstances when they meet to form columns.
Read more →Karst Landscape Formation
Sinkholes, towers, dolines, and disappearing rivers — how dissolution of limestone creates the world's most distinctive surface landscapes.
Read more →Blue Grotto (Capri) Deep Dive
Capri's famous luminous sea cave — visitors enter by tiny rowboat through a one-metre opening as oarsmen sing.
Read more →Krubera-Veryovkina Deep Dive
The deepest caves on Earth — two adjacent Georgian Caucasus pits each exceeding 2,000 metres of vertical extent.
Read more →Reed Flute Cave Deep Dive
Guilin's electric-lit karst chamber — Chinese show cave with coloured lighting, mirror pools, and 1,200 years of poetic graffiti.
Read more →Jeita Grotto Deep Dive
Lebanon's two-level karst showpiece — boat ride through an upper-cave river and walking tour through a vast decorated chamber.
Read more →