For you history buffs:

The trail crosses the Rubicon river close to Lake Tahoe, the river was named by settlers after a small river between France and Italy.

Julius Caesar crossed this river in Europe and exclaimed alea iacta est or the "the die is cast! since he was the point of no return and declaring war on Rome with his army advancing on Italy.

So, "crossing the Rubicon" means you went beyond he point of no return.

For me the the die was cast the 1st time I watched the R.Russell rubicon video, been back 3 times now and can't wait to go again

Brian