It is called iwatake (kanji: 岩茸 or 石茸) in Japanese and seogi (hangul: 석이; hanja: 石耳; literally "stone ear" or "rock ear") in Korean.
Colocasia esculenta | Psoralea esculenta | Gyromitra esculenta | Morchella esculenta | Lichen covered boulder in Otter Creek Wilderness. (The species is ''Umbilicaria mammulata |