Spelunkers are individuals who explore and map out caves. They explore cave systems and networks to document different features, such as passages, tunnels, and formations. They also look for and identify different geological structures and formations, such as stalagmites, stalactites, and underground lakes. They are also keen to study and discover the unique flora and fauna that live in these underground ecosystems. Some spelunkers explore caves for scientific purposes, while others do it for recreational or adventure purposes. Spelunkers often use specialized equipment such as headlamps, climbing ropes, and harnesses to help them navigate the caves.