The Vault. Seen On the Street By Graff Hunter on August 30, 2013 Location: Fruitvale Bart Station in East Oakland, Ca Artist: Koleo. David Polka. Brett Flanagan. Photographer: Graff Hunter. Tags: Brett Flanigan, David Polka, Koleo, Mural, Oakland, Oakland - East Oakland, Oakland - East Oakland - Fruitvale