Easton's Bible Dictionary
"The most interesting remains of Gadara are its tombs, which dot the cliffs for a considerable distance round the city, chiefly on the north-east declivity; but many beautifully sculptured sarcophagi are scattered over the surrounding heights. They are excavated in the limestone rock, and consist of chambers of various dimensions, some more than 20 feet square, with recesses in the sides for bodies...The present inhabitants of Um-Keis are all troglodytes, 'dwelling in tombs,' like the poor maniacs of old, and occasionally they are almost as dangerous to unprotected travellers."
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain.
Easton, Matthew George. Entry for 'Gadara'. Easton's Bible Dictionary. https://www.studylight.org/dictionaries/eng/ebd/g/gadara.html. 1897.