Built in 1951, this straddles the approach road to Clunie power station and is an actual size cross-section of the 22 foot 6 inch horseshoe shaped Clunie Tunnel, which brings water 2 miles from Clunie Dam to the power station. This was the largest water-carrying tunnel in Britain at the time.
The Arch also serves as a memorial to tunnellers who died in a freak accident during the driving of the tunnel: A charge at the working face was exploded prematurely by lightning striking the hillside above.
In the 1890s Lord Mount Stephen (a Dufftown loon and promoter of the Canadian Pacific Railway) had rented Faskally House, chiefly for the salmon-fishing where the Tummel and the Tay meet. See NJ3239 : Plaque to George Stephen (Lord Mountstephen) for a plaque to him in Dufftown.