Two were injured, including one with serious injuries. MOUNT BALDY, Calif. The seriously injured hiker was hoisted into a helicopter and transported for medical attention. Rescue crews assisted an injured hiker on Mount Baldy after an avalanche. The copter then returned for the second hiker. (KABC) — Emergency crews rescued two hikers who had been injured Thursday in an avalanche on Mount Baldy.Officials say three people were hiking when the avalanche occurred. Mount Baldy is in the San Gabriel Mountains, north of Upland.