Antarctica, aliens, and UFOs

Those who are interested in the speculations about Antarctica, hollow Earth theories, and UFOs might be interested in my new suspense novel Deception Island (by J.D. Boss). In it Rachel receives an urgent call to come to Antarctica to examine an unusual body that was found in an ice cave. The body, as it turns out, is that of an alien species who are living inside our Earth. Little does Rachel know that bioterrorists, who are engaged in secret genetic experiments in an abandoned World War II Nazi base under the ice, are also after the body--and her.
Does anyone else have thoughts about where ETs might be living if, in fact, they are already here on Earth?