Irvine is a town in North Ayrshire, Scotland and is located on the coast of the Firth of Clyde.
The Antonine Wall is between Firth of Forth and Firth of Clyde.
bay
arron
The Antonine Wall is in Scotland, between the Firth of Forth and the Firth of Clyde.
The Antonine Wall is in Scotland, between the Firth of Forth and the Firth of Clyde.
Source - Lowther Hills in South Lanarkshire. Mouth - Firth of Clyde
Ayrshire
Between 50 and 150 meters
Dunoon is a resort town on the Cowal Peninsula in Argyll, Scotland. Dunoon sits on the Firth of Clyde to the south of Holy Loch and to the west of Gourock.
Ayrshire
I'm guessing it might just be the Clyde ! It's the main river which flows through Glasgow.