The falls are in Glenisla, on the River Isla, in Angus.
Dundee is in the County of Angus.
Forfar is the county town of Angus, although Dundee is a lot bigger. The original name of Angus was Forfarshire.
I think Forfarshire was the name of a well known ship.
Possibly the one that Grace Darling was involved with?
It would take me around 45 minutes driving to the falls.
And there are seldom people there.
The falls are as far up river as the salmon can get.
Did you see the reference to the caves?
That will be where the taghairm goes on!
I get a Tweet from OED every day.
Usually something interesting!