Black Oak Christmas Rally set for Dec. 1st - 3rd with x-tra day options is just around the...Black Oak Christmas Rally set for Dec. 1st - 3rd with x-tra day options is just around the corner. Come join Tim & Greg of Rainbow RV as they host one of the most festive events of the year. Black Oak RV Resort is located in the the foothills of Tuolumne County and is attached to the Black Oak Casino Resort.....Hope you can join them for a fun and festive Rally. Show more