Mammoth Springs, in addition to having one of the best mountain overlooks, boasted a lovely population of resident lady elk. Apparently they come down in the autumn to enjoy the lawns and await their elk fellas, who mosey over in the breeding season. We only saw one male while we were there, so no dramatic rut-battles – alas. But the lady elk made excellent models – unafraid and very relaxed. Just don’t wander too close or the park rangers will shout at you through a megaphone.