Dinosaur Train - Season 4 - Eps 19: What's at the Center of the Earth? (3): Troglobites
The Drill Engine Train burrows into an underground limestone cave, where the Pteranodon Family meets some strange creatures without eyes called "troglobites." In a contest to see who would make the best troglobite, Buddy, Tiny, Shiny, and Don participate in a treasure hunt - with their eyes closed! The kids have to rely on their other senses (with some guidance from the actual troglobites) to navigate the cave and find the prize. Story A Educational Objectives: A speleologist is someone who studies caves. Also, there are creatures called troglobites whose bodies are specially adapted for living in deep caves without any light.
About Dinosaur Train

Title: Dinosaur Train
First Air Date: 2009-09-07
Last Air Date: 2019-11-18
Status: Returning Series
Rating: 6.2/10 (from 37 votes)
Language: EN
Seasons: 6
Total Episodes: 200
Network: PBS Kids
Genres: Animation, Kids
Production Companies: The Jim Henson Company
Synopsis
Join Buddy, a Tyrannosaurus Rex, and his adoptive Pteranodon family on a whimsical voyage through prehistoric jungles, swamps, volcanoes and oceans, as they unearth basic concepts in life science, natural history and paleontology.