Springfield Gorge

Springfield Gorge, "the third most beautiful gorge in the state", is a gorge in Springfield. Bart wants to jump across the gorge on his skateboard, Evil Kneivel-style. Instead, Homer almost makes the jump, falling to the bottom banging his head as he goes along. The ambulance later crashes into a tree and Homer falls out of the back on a stretcher and goes down again. Homer and Bart later jumping the gorge on a motorcycle. The ambulance is still seen crashed in the tree.

Behind the Scenes
According to the Simpsons Guide, there is a section of the Gorge called "Homer's leap," dedicated to a local man who fell down the gorge twice in one afternoon.