Nice trail system with more trails than on the map, so easy to get off track. Starts getting steep approaching gap between Twin Peaks. Going up Twin Peaks South the trail splits; we took the righthand split which left the ridgeline and made for a very steep ascent, but we headed toward the boulders to go down the trail that sticks close to the ridgeline and found that a little easier. No more elevation sickness, so ready for higher ground.