Mara writes...

When I visited Puerto Rico last fall (October of 2013) we went on a tour of the cave system in Camuy- which is awesome. On the tour, our guide commented that normally, human settlements only exist in caves that have a clear entrance and exit that face east and west- so that there is light in the cave during the day. For that reason, caves with north/south facings would be avoided.

Anyway, my question is- did pre-bronze age gargoyles tend to have settlements in cave systems over other areas- since their eggs need thermal energy access anyway?