A few club members and I went on a field trip to Limestone Canyon, Hell Canyon bridge and Drake. We followed some of the old Pea-Vine right of way up Limestone Canyon which is north of Paulden AZ. and west of Drake. For anyone interested here are a couple of links to a brief history of the Pea-vine. http://www.sharlot.org/archives/history/dayspast/text/1999_01_24.shtml http://www.sharlot.org/archives/history/dayspast/text/1999_01_31.shtml In the first photo the old right of way (the current road) can be seen along the hillside in this photo. The second is one of the many gorges that were bridged by wood trestles. The third is one of the limestone kilns in the area. The fourth is a wooden culvert under the old right of way. It is over 100 years old.