12,409-foot Lake Peak is a classic hike for Los Alamos folks, and has been since Enrico Fermi and Hans Bethe made it a break from their Manhattan Project efforts. We will do it once again via a classic route: starting at the Santa Fe Ski Basin, we will climb the Windsor Trail to the saddle with Raven Ridge, follow the ridge to Deception Peak and then across the knife edge to Lake Peak, then drop down into the cirque of Nambe Lake, following its drainage to the intersection of the Windsor Trail and the way home.