So from Xmas Tree Inn we took off for Boulder Dam. All I can say is that is was a terrific climb up-up-up for 105 miles a long time. We got there at about 8:25 am and in about ten minutes we went thru the Dam on a guided tour. 30c for adults nothing for children under twelve. Tour took about 25 minutes. Project was conceived in Teddy Roosevelt's term of office and took 5 yrs to build. It is tremendous in scope