Congratulations to equinedoc and geodogs for the FTF
This cache is a 35 mm sized container and can be found in a very common hiding area. You should be able to either remove the cache from its hiding place or take the log from the container.
You will need to leave the MidState Trail for about 200 feet to find the location of this cache.
It is not in a wall so no rocks will need to be moved to find this.
BYOP
We used waypoint averaging on our Garmin GPS to get the coordinates.
The only trail in this area is the MidState and is well marked and easy to follow.
The area is open from Sunrise to Sunset
http://170.63.70.137/eea/docs/dfg/dfw/habitat/maps-wma/central/fourchimneyswma.pdf
Note that a "hunter orange" hat is required wear for hunters during the pheasant season.