“Here, come look,” he said. He pointed out dozens of tiny aquatic insects hatching on the rock. This told him precisely which fly to tie because, as he explained, the trout would only bite on an artificial fly that resembled what was actually hatching. The guide then put the stone back exactly where he had found it. I was intrigued. There was a world of information under that rock, if only one knew or cared enough to look for it.
