These lines are from GPS tracks I took while hiking to Base Crestones, and then the next day to Cerro Chirripo (red) and over Los Crestones (blue) on the way back. I hiked out the following day. This was a very nice loop hike out of Base Crestones, taking only about 6 hours, including lots of time scrambling around on Los Crestones.
I have a full set of pictures from my Chirripo/Los Crestones hike on flickr