We humans don't just love wild places. We need them; we need their scale, their breath, their drama and enigma. Wild places can be a balm and a solace; an escape or a returning; a best friend; an inner cleanse. And they can remind us of our unimportance in the world.
Wander off the beaten track to uncover the world's most secret destinations: discover an ancient gateway to the Mayan underworld, a mysterious underwater monument sunken off the Ryukyu Islands in Japan or a prehistoric village covered for centuries by a huge sand dune in the Orkney Islands.