T-Rex Terror

My dungeons are made to be system-neutral and setting-neutral, although it is aimed at fantasy roleplaying games using a d20 system. 

I've been sprinkling little hints troughout my setting that dinosaurs once roamed the jungles. Like dragons, dinosaurs and especially the T-rex have always triggered a sense of awe inside me. This is their first encounter with one in the flesh. Rotting flesh.

Possible scenario hooks:

• Recent earthquakes have frightened locals. They claim these originate here.
• Enormous footprints are found throughout the jungle. Some lead here.
• A new tribe of kobolds have set up camp here and are performing raids.