As Jason descended farther into the cave he began seeing cave drawings in the form of a lion. 
"What is this." he said aloud as he continued down before the cavern closed and only a single path existed at the bottom remained. Jason Wandered through and as soon as he was through the narrow passage the room that laid before him was astonishing. The floor changed from rock to metal and as soon as he looked up he saw a massive door with a lions picture on it painted in red.