Since Rob visited, Keystone N.B. can now be viewed only on a
ranger-conducted tour. Inquire at the Visitors Center for when a
tour might be arranged. The span is located in the Blue Mesa area.
The turnoff to Blue Mesa is to the left off the main park road about 9 and a half miles south of I/S 40. The unstable condition of the formation probably led to the present access restrictions. See also
Keystone N.B. Two.
Photo by Rob Jones