This could inspire me when I'm making concept art on the second area of the game (which is a large forest with ruins of a castle in the middle) (((Silk Tree Growing Over Ta Prom Temple, Cambodia, by Lisa Brown)))
Explore underground rivers and ancient ruins at Xcaret archaeological park
Myra, Turkey - The ancient town of Myra in the Lycia region of Anatolia, modern day Turkey, boasts a number of breathtaking ruins including the Acropolis on the Demre-plateau, the Roman theatre and Roman baths.
Santa Marta, Colombia -- La Ciudad Perdida (The Lost City). Hidden (literally) in the crevices of northern Colombia’s Santa Marta Sierra Nevada mountain range, La Ciudad Perdida was built by the Tayrona people around 800 AD.
Maybe over time, and after many rains, a stream was rerouted through the old temple ruins. It would probably be where the Impions would get their drinking water from to. It would be pretty convenient since they live in the ruins.