The route starts with a trek up Lyell Canyon on the John Muir Trail, one of the most runnable stretches of trail in the High Sierra. At the head of the canyon is a climb up to Donohue Pass with an excellent view of Mount Lyell and Mount Maclure. Soon after Dononhue Pass leave the trail and head south through easy alpine terrain to the meadows beneath Marie Lakes where the Marie Lakes trail is intersected. A short climb on this trail brings one to Lower Marie Lake. From here continue cross country up a ridge on the south side of the lake and then traverse granite and talus slopes to North Clinch Pass. Lower Marie Lake is a large body of water and includes stupendous views of Mount Lyell and also across Rush Creek basin to Donohue Peak and Mount Andrea Lawrence. The narrow ridgeline is particularly scenic with a “secret Marie Lake” visible deep in a granite bowl. The direct route over North Clinch Pass includes some class 3 scrambling on its south side but it looks like a somewhat circuitous detour south along the ridge could eliminate the class 3 altogether. Passage through North Clinch Pass brings one into the remote upper reaches of the North Fork San Joaquin River. This drainage, like the Lyell Fork of the Merced River, is rarely visited but a real gem of the High Sierra. My passage through this basin was at its uppermost reach via a high traverse to Electra Peak on talus and granite slabs. I could see the numerous inviting lakes below, but my path would remain above them.  I look forward to visiting these lakes in the future. in fact, the High Sierra Route passes through perhaps the most dramatic part of the North Fork San Joaquin River drainage as it descends from Lake Catherine and traverses to Twin Island Lakes with wild views of the North Fork San Joaquin River Canyon and Mount Ritter and Banner Peak towering above. After the traverse of the headwaters of the North Fork San Joaquin River to Lake 11,815, the climb of Electra Peak’s north ridge is a straightforward scramble on talus and then some rock on the final portion on the ridge. The view from the summit is incredible and takes in a 360 degree panorama encompassing everything from Half Dome to the Clark Range to Mount Lyell to Ritter and Banner.  The best view in my opinion looks down the Lyell Fork of the Merced River with it’s numerous colorful lakes and beautiful meadows. From the summit, descend Electra’s northwest slope (talus and slabs) to Lake 10,999, a deep blue lake situated in a barren granitic landscape. Descending down the drainage from Lake 10,999 leads to Lake 10,702 tucked in beneath a rugged ridge extending to Mount Ansel Adams. A descent down a minor headwall beneath Lake 10,702 leads to a lake with striking bright turquoise color. This lake is not even assigned an elevation on the topo maps, but is one of the unique highlights of this region. The next lake on the trip down the Lyell Fork is perhaps the most spectacular and is labelled as Lake 10,217 on the topo map. This lake retains some of the turqouise color as the previous lake but has a bit more of a blueish tint. The lake also includes more vegetation along its shores, an alpine beach, and an elongated shape that makes it look like a swimming lane with Mount Ansel Adams and Foerster Peak towering above. This is certainly a spot I could spend some time relaxing!  Below Lake 10,217 is the primary headwall of the drainage and includes a fair amount of micro-navigating to avoid small cliff bands (although numerous routes are available). Below the headwall, travel becomes easier through open forest eventually reaching the splendid meadows. From the meadows it’s about a mile downstream through forest and granite slabs to the Isberg Pass Trail which is taken north to the Lewis Creek Trail. The ascent up the Lewis Creek Trail leads to Vogelsang Pass and then down the Rafferty Creek trail back to Tuolumne Meadows. GPS route info here.