The Easton Glacier pours south from the massive volcanic cone of Mt Baker, providing the easiest and most straightforward route to the summit. From the parking area (NW Forest Pass required) follow the Park Butte Trail to treeline above the switchbacks, then take the climber's trail to the right through meadows to the Railroad Grade, a large lateral moraine of the (former) lower Easton Glacier. There are several places to camp along the ridge. Cross onto the glacier at some point between 6,000 and 6,750 feet, wherever is best to avoid the crevasses that open in the spring and summer. Keep in mind that the largest hazard on this route is hidden crevasses, which are present even in the early spring. The glacier steepens as you ascend higher toward the western rim of Sherman Crater. Follow the edge of the crater to the steep ice east of the Roman Wall, then onto the broad summit plateau.