At Grand Teton NP - I didn't plant applecores in National Parks this time as they seem overinsistent on weeding out nonnative species these days, to the degree of poisoning the waterways of Yellowstone with rotatone to kill off all the fish and repopulate. I need to look this up, but I wonder if that's why Dierkes lake lower down the Snake river tasted funny and had dead fish in it.