Phrag Bessea was found by Elizabeth Locke Besse in Peru, in 1981, apparently by "looking down." I am not so sure whether it was in a romantic spot in the ruins, or by a garbage dump, but I prefer to think the story went something like your scenario. I am a little old and fat to make that trip now, but Costa Rica, Squee Sloth Capitol of the World! 2017!!! Huzzah!