As the name implies, it's in La Jolla Canyon, before you reach the
Falls. You can get a nice view of the Falls from here (they're
seasonal, so no guarantee that they will have water in them when
you go) and it is close enough to the parking area that even the
Ventura_kids might go for it 
The cache is a camo-duct taped, 6 oz. capacity, plastic sample
bottle with a green-painted lid. It has a log sheet and a green
pen. It won't hold anything much more than a couple of Matchbox
cars, or a small TB.
We strongly encourage you to park in the La Jolla parking lot;
five bucks in the "iron ranger" is a cheap price to pay to help
keep this area open and looking nice. Be sure to bring water! There
may or may not be water at the bathrooms that are just up the trail
from the parking area. Note that this building might not be
open.
There are more caches up the canyon and in La Jolla Valley, as
well as in the hills surrounding this area. The Ray Miller Trail
also has caches, as does the Overlook Trail on the ridge to the
east. You can easily spend all of a summer's day geocaching out
here 
The hint might help you find it, but you can still reach it from
trail level. Have fun!
