How about a little story?
On September 11, 2001, when the rest of the world was watching airplanes fly into the World Trade Center, the City of Springfield, Missouri was using dynamite to widen a road.
They had already laid their charges, so they decided to go ahead and blow em.
The explosion opened a hole, which they discovered was actually a cave. Upon further exploration, they discovered that the cave was about 2000 feet long and EXTREMELY old.
They actually opened the back end; the entrance was over the hill by the creek and had silted in ages ago... Cave experts were called in and cataloged the yooj numbers of animal, bird, reptile, whatever, remains of species of stuff you'd never think would be found in a cave.
They found fossilized bear bones, fossilized bear shit, from the short-faced bear, a species that has been extinct for thousands of years. They found what looked like fresh bear footprints in the still wet clay. They found where the bear was sleeping. They found fresh-looking pig tracks, and discovered where the bear had ambushed the pigs inside the cave. One pig did a faceplant in the wet clay and that is still visible.
I hope this is OK to post here: