WLSEmergency crews struggled for nearly two hours to rescue a horse that fell into a sinkhole in California. ARROYO GRANDE, Calif. (WLS) -- Emergency crews struggled for nearly two hours to rescue a horse that fell into a sinkhole in San Luis Obispo County.The animal was stuck up to its neck in a ten-foot deep hole near Arroyo Grande, Calif. on Tuesday. About 20 rescue workers were able to pull the horse out without injury.The horse is expected to recover. Emergency crews struggled for nearly two hours to rescue a horse that fell into a sinkhole in California.