The Giant Footprint is a special encounter in Fallout.
Overview
The map consists of a large footprint, consistent with the feet of a large theropod.
In the footprint are the remains of a male peasant. He is now a puddle of goo and within the goo is a Stealth Boy.
Behind the scenes
This encounter coincides with the original plot of Fallout, which, according to Timothy Cain during a live conference, involved time traveling and dinosaurs. While these aspects were ultimately scrapped for the new plot that later became the official Fallout game, a dinosaur footprint remained indirectly in homage to the dinosaurs intended for the game prior to modification in the form of a non-canon random encounter. [1]