English: Interesting facts I found on the Half-moon trestle on the Camas Prairie line. Although I was not able to confirm, Half-moon trestle was named after one of the tribe members of the Nez perce tribe. The Camas Prairie Railroad line in north central Idaho was often referred to as the railroad on stilts due to the many trestles, like this one, on the line! In the approximately twelve miles between Culdesac, Idaho and the top of the grade at the edge of the Camas Prairie, the railroad climbs close to 2,000 feet. This famed stretch includes seven tunnels (now 6 as one was 'daylighted') and eighteen trestles! The most famous of these trestles is the Half Moon Trestle, this is a graceful 684 feet arc, 141 feet above the ground! This was built using one million board feet of timber! While this retired railroad may not be known to most people outside the area, the engineering on this line is famous throughout the industry. If you saw the 1975 western Breakheart Pass with Charles Bronson, you would have seen these trestles in the movie! They are a great part of the history in this region.