Looking at the percentage grade at certain places to plan a day photo session of the opposite side, where Devon went missing. The slope angle at certain places of this road may be greater than a 25% slope, and that is extremely dangerous. Slips and falls will result in an increase in "falling object physics" down steep cliffs to your death. The slope/road analysis is needed to determine if tire chains, or traction devices are needed on electric mountain bikes in this area.