Plotkin was profoundly impressed by the valley. He said that, in all his years wandering the jungle, he had never seen a place like it. “This is clearly one of the most undisturbed rainforests in Central America,” he said. “The importance of this place cannot be overestimated. Spectacular ruins, pristine wilderness—this place has it all. I’ve been walking tropical American rainforests for thirty years and I’ve never walked up to a collection of artifacts like that. And I probably won’t ever again.”