La Sierra de La Cabrera - granite boulders

Ron,
micritter,
Many thanks to you both!

Here we are - Asterix/R.Goscinny did right. You not neccessarily need to learn on hard school-benches.
But the connection with the river Rubicon, I didn't know. I knew that crossing the Rubicon-phrase as "point of no return" or that the way ahead is as far (or already shorter), than the way back. "Alea iacta est" or "Die/Der Würfel sind/ist gefallen" (usually it is plural - sind=>are - in German) or "The die is cast" for me had the sense of "The decision is made".

Yet, enjoy your Sunday! :-)
(Finally we have some rain over here and end of September-temperatures. It was, perhaps still is far to dry (and to warm). As a garderner and a person who works outside most time of the week, I happily can cope with rainy Sundays - I just made a fire in my oven and looking forward to a nice cup of tea) :-)

You are probably right. I know about the Crossing the Rubicon speech - and another one is 'to burn ones boats.' Cortez I think.
Enjoy your tea!!