Och Aye - you were in the very deep waters of the Great Glen - Scotland's coast-to-coast ancient geological fault line.
You were indeed in a lonely spot in walking the military road* to the tarn:
http://escape2places.files.wordpress...inwarning7.jpg
Btw, you met your stag much like the Monarch in her Land Rover met the Monarch of the Glen (the stunning scene from the movie The Queen ).
*Wade built 250 miles of road and 40 bridges for George I following the Jacobite Rebellion of 1715. Four new military garrisons were to be linked
and if you were on the south side of Loch Ness it was probably the Inverness to Fort William military road (the ten companies of militia he also created later became the famous Regiment of the Black Watch).
http://en.wikipedia.org/wiki/File:Ge....uk-242563.jpg