A system of ecological reserves is a "genetic data bank" which may hold the key to new discoveries in forestry, ecology, agriculture and medicine. The trails are open to the public free of charge during daylight hours. Blue Sky Reserve to Ramona Lake Trail is a 5.8 mile heavily trafficked out and back trail located near Poway, California that features a lake and is rated as moderate. 1010 Riverside Pkwy, West Sacramento, CA 95605 §630. /*