Stray Gru Stray Gru @stray-gru Sioux City Iowa ActivityProfile3DFriendsSpecimensGroupsForumsFiles View Base Name Stray Gru 1. Your First Name: Stray 2. Your Last Name: Gru Location Sioux City Iowa About I’m 48 and been picking up rocks sense I was 5 . So I can say I am 43 years experienced in rock hounding Groups