The overlook is also the starting point for trails into the adjacent Tom McCall Nature Preserve. The shorter plateau route crosses open grassland and passes a permanent pond, while a longer climb reaches McCall Point, where the Gorge opens toward Mount Hood and Mount Adams. Trail descriptions differ on the exact distances, so check current route information before setting out. The landscape is more than a spring flower field: lava flows, volcanic ash and catastrophic floods shaped its rolling mound-and-swale ground, whose precise origin still puzzles experts. In April and May, yellow balsamroot and purple lupine bring the slopes into bloom, but this is also when the preserve can be very busy. The trails are seasonally open from March 1 through October 31. On preserve trails, dogs and picnicking are not allowed. The nearest picnic area is at Mayer State Park by the I-84 Rowena exit.