From La Ventana it was only 35 miles to the city of La Paz up over a modest mountain range. In La Paz we resupplied in the very extensive Walmart store, and a Pemex gas station before undertaking the relatively uninteresting drive to Ciudad Constitucion. Throughout the day the wind strengthened and blowing dust became more wide spread so that by the time we got to Constitucion we selected a campground that we hoped would give us some shelter from the wind and dust.
The place we chose was called Misiones on the northern side of town. The vegetation did indeed provide good shelter from the wind. The place had good wifi, electricity (that was too dirty to run the microwave), very low water pressure, a sewer dump and cold showers. We understood from the guide book that this place was originally owned and run by an Austrian but has since passed into Mexican hands. It had a nice communal area, swimming pool and everything was clean and tidy.