‘snakes’ run from both ends of the house to the blockage (about 80 feet one way), down a side line to take care of the problem in the second bathroom, several phone calls and a house ‘colonoscopy’, the tentative diagnosis is not good. 

It appears, after they ran a camera into the bowels of the plumbing system, that there may be a break in the main line that takes waste water out into the sewer system.  Then they used a beeping sci-fi rifle looking contraption with 2 large balls on the barrel to locate the problem.  Of course, the break has been located buried in the slab under my one-year old saltillo floors, about a foot from my bed.

The solution is to break through the saltillo and the concrete slab to get access to the area and replace the pipe – 3 days of work, not including replacing the floor tiles.  I am now waiting to get an estimate. 

At least the rest of the plumbing in the rest of the house is working normally.