That's mystery, Dutchy. But I "almost" can plunge there a Leg of Mutton...
"Any explanation of the mystery of its intense blue colouring has yet to be successfully proven. Early in November, the sombre blue, which is in evidence during the winter months, mysteriously changes to an intense deep turquoise blue almost overnight. The colouring remains until late February, when it gradually changes. From late March, it returns to a distinct sombre blue colouring that remains until the following November.
The 3.6 kilometre road and walking track around the circumference of the lake provides access to many viewing points."
To lift the mystery:
So it's your turn again, Francis. (Took me a bit longer to get there - from the Eifel maars :wink: )
No, Walter, it's your turn as you named and showed the place..
(I've to go out for an hour or so)...
Certainly you wouldn't walk up to this place - but where is it?
Probably Germany. River Main?
Not Germany and therefore not the Main.
Usually this place is photographed from the down position - which might be another hint.
But it is in Europe, right?
Perhaps along the Danube river?
Europe is correct, Danube unfortunately not.
No, not the Netherlands neither.
None of both - it's actually quite close to your home country.
Perfect, Francis! Your turn.
Good morning Francis & Walter.
On checking the thread I've noticed you solved my picture. Congratulations and well done.
The Blue Lake at Mount Gambier is situated in my home State, approximately 400km from here.
Regards Dutchy