It was a striking sight: David Friedman, the U.S. ambassador to Israel, wielding a sledgehammer at an archaeological site in Jerusalem. But his presence there was about more than a unique photo-op. It began 15 years ago, when construction workers repairing a burst sewage pipe discovered an ancient staircase directly south of the Temple Mount. The steps closely matched stairs abutting the original ancient entryways of the temple complex. Archaeologists realized that the sets of stairs were linked. They had chanced upon a road leading to the temple. After years of excavations, members of the public soon will be able to walk the Pilgrimage Road.