The first stretch of the videos was shot with a GoPro mounted on our ATV as we travel from the site of Woodstock to the start of Sherrod Loop. I wish I could have gotten aerial shots of the location with the drone I brought, but time limitations with our rental made this unfeasible. Instead I took screen videos of Google Earth traversing the loop's terrain. At the end, I walk the relaid track. Pardon the bounce as I was using a traditional camera. Should've used the GoPro! Hindsight :)
Balloon LoopsIt is easy to forget that the concept of the balloon loop (or switchback, though not in the traditional railroad sense) was an engineering innovation in scaling mountains. It involved the concept of a route doubling back on itself, thereby gaining more distance in which to continue to gain more elevation. Sherrod Loop allowed the Denver, South Park & Pacific Railroad (later, Colorado & Southern Railway) to gain elevation on its way to the Alpine Tunnel in Colorado. After going upgrade along the mountain for many miles, passing Alpine Pass, the railroad makes a sharp turn, completely reversing it's direction, allowing it to continue the climb higher and higher to the summit and tunnel.
A Water Tank at Sherrod?I was not aware that there was a water tank at Sherrod, but on the narrow gauge discussion forum it was pointed out that Colorado Rail Annual #31 says:
Sherrod MP 163.8
A wooden tank, 16' x 12', was constructed in 1898. Water was gravity-fed from a spring higher up the mountain.
One person posted this photo of what he surmised to be the base of this tank: