Cable cars ascend from Zermatt to Winkelmatten via Furi to the Schwarzsee, and via Furi and Furgg to the Trockener Steg at the upper Theodul Glacier, an altitude of 2,939 meters.
From the Trockener Steg, a ski lift, also open in the summer, goes up to the Furgg saddle at 3,365 meters on the Italian border. Another ski lift runs via Gandegg to the Theodul Pass.
You can take a five-hour glacier tour with a guide, hiking to the Hermettji then, 2.25 hours beyond, cross the crevassed Upper Theodul glacier with a rope to the pass.
