tl;dr. But I spent roughly two days in Lago Agrio when I was 15. It was on vacation with my family, and we were on our way to a canoe tour through the jungle. I distinctly remember the town itself, because it had a wild-west feel to it; it was the first place I can remember hearing small arms fire in the distance at night. Only drunken workers firing into the night sky, but memorable nonetheless. That was twenty years ago. The environmental impact was clear then, I remember lots of slash-and-burn farming and cocoa and yucca plantations. I shudder to think what it's like now.