Lots of up- just as much down.
From village store, follow san vicente east to fire house. Find single track behind fire house and continue to follow east. Up the hill. Up the hill. At top, find a jeep yrail to lead down to the oak groves. Either stay on Ramona Oaks or turn right on Watt and head back to store.
http://www.singletracks.com/item.php?c=1&i=7421