I attempted to walk out across this arch from left to right ('for the hell of it...') but as you can see, the narrow strip of earth on the top is broken & discontinuous, and it felt a bit marginal. Wisdom won out, and I backed off.
Uploaded to Geograph by Richard Law on 15 April 2012
Photo © Richard Law, 15 April 2012. Licensed for reuse under this Creative Commons licence