We suspect calluses on both the hands and feet of John Soares. He is a dedicated and constant hiker, so that would explain foot calluses.
And he is an energetic and prolific writer, so we can imagine a few keyboarding calluses on his hands.
He's got two new hiking books out, a fourth edition of 100 Classic Hikes: Northern California, and the smaller, more portable Day Hiking: Mount Shasta, Lassen & Trinity Alps Regions.
We bring the author into the studio for a discussion of some of his favorite hikes in the region.