The smelly stuff you pump into your truck is just dino-rot. And a bunch of rotting dino food, and rotting once-live stuff. Come to think of it, after a million years it's probably about done rotting. I like creeping around really old places, most places even in the U.S. you can find out about who lived there way, way before you - the coastlines stay mostly the same, so a good bay or fishing spot has been that way for thousands of years - and thousands of people. Just in the past few decades, they've jacked the estimate of the number of American Indians from a few million to forty or fifty million - that smallpox and measles worked way better, and way faster, than anyone had even realized.