This is the Slateford Aqueduct on the Union Canal, its
on my cycle route to/from work.
It's a slightly unnerving ride across the rough
cobbled path just wide enough for one bike.
The aqueduct crosses the Water of Leith and a roadway
about 80ft below, its about 600ft long and was built in 1822.

PS thats not me, I had stopped to let the other cyclist through !