Two explorers called Tom and Jerry go underground, where they meet a descendant of the lost continent of Lemuria and get taken to an underground city called Talos.
A young woman called Hayley enters a stone circle in Cornwall and gets transported to a world inside the Earth called Agartha. While there, she meets one of the beings and is taken on an adventure to
Two explorers called Jack and Jill enter a very deep cavern system, where they meet a descendant of Atlantis and get taken to a crystal city called Posid.
From the crater of Mount Sneffels, I journey deep underground. Along the way I discover many mind-blowing wonders, including a city called Atlantis. I then get transported to the Hollow Earth.
