Earth not only does not support diverse ecosystems, but it also has places that serve as analogs for other celestial worlds ...

This cave is so deep that it can accommodate 30 Qutub Minars and more... it is in... Caves have been part of the civilisation from the beginning of the formation of ...

Two decades later, I organized a series of expeditions to investigate new deep caves, using dye traces in cave streams to probe Arabika’s potential depth. In 2001 a team led by Ukrainian Yuri ...

Krubera Cave in the republic of Georgia is currently the deepest known cave, at 7,208 feet. But Dark Star, with so many areas still to survey, is a prime candidate to take over the title.