In Jotham's Journey, Jotham is taken to a "nasty place" called En Gedi.  The real city of En Gedi existed for thousands of years on the shores of the Dead Sea.  It was best known for its fresh spring water and temperate climates which provided for good agriculture.  As Jotham and Nathan discovered, En Gedi was also known for its caves.

En Gedi: On the hills above the Dead Sea

En Gedi Springs: One of only two fresh-water springs along the Dead Sea

En Gedi Ruins: With the Dead Sea in the distance, much as Jotham would have seen it!

Photos courtesy of BiblePlaces.com -- where you'll find many more images of the Holy Land for church and Sunday School use.