The route starts at the end of Mineral King Road. The road is narrow, steep and winding, with unpaved sections; RVs and trailers are not advised. Mineral King is generally accessible from late spring through fall, then closes for winter snow, and exact opening dates vary. Carry drinking water or treatment because the park cannot guarantee that lake and stream water is safe. Overnight camping requires a wilderness permit. In spring and early summer, marmots can chew vehicle hoses and wiring around Mineral King, so plan to protect your parked car.