RT @sandiegoparks: Picture yourself in a secluded portion of Ramona Grasslands County Preserve. The Old Survey Road 97 Trail is now open Saturdays and Sundays to 50 people per day who complete the 10-min. permit process. https://t.co/eruGGXOICm https://t.co/rHhQqDwmzO via @SanDiegoCountyMore