Many Pasadena locals consider the Arroyo Seco to begin there but it begins above Switzer Falls. The Gabrieleno Trail (and the Angeles Crest Highway a little further away) parallels the Arroyo Seco most of the way up (down) but the trail takes a temporary detour due to the canyon being too narrow. Most of the hike up the Gabrieleno Trail is easy but there is a steep part when the trail passes the Brown Mountain Dam and then the final part going up to Switzer Falls is steep. I am not sure but the Arroyo Seco might go up past Red Box (the turnout from the Angeles Crest Highway for going to Mount Wilson).
Many Pasadena locals consider the Arroyo Seco to begin there but it begins above Switzer Falls. The Gabrieleno Trail (and the Angeles Crest Highway a little further away) parallels the Arroyo Seco most of the way up (down) but the trail takes a temporary detour due to the canyon being too narrow. Most of the hike up the Gabrieleno Trail is easy but there is a steep part when the trail passes the Brown Mountain Dam and then the final part going up to Switzer Falls is steep. I am not sure but the Arroyo Seco might go up past Red Box (the turnout from the Angeles Crest Highway for going to Mount Wilson).
Nice series.
JPL should have a monument of some kind.