Gama Ishi (Toad Rock)
"This is a rock formation on Mt. Tsukuba in Tsukuba, Tsukuba City. It is located along the path from Tsukuba Sancho Station on the Mount Tsukuba Cable Railway Line to the main building of Nyotaisan Shrine and got its name from its resemblance to a toad or frog with an open mouth. Tsukuba's famous product, toad oil, is said to have first been promoted in front of this rock. It is believed that if you throw a stone and it lands in the ""toad's"" mouth, your wish will come true."