Machaca;
Lomapaseo - After reviewing several local newspaper and tv reports, I put it about 6 to 7 km WNW of your estimate, on the Casa Blanca farm (just outside of Madrid - Google Maps has it as La Pincha) between highway 50 and the Hacienda .
Agree. I think the lake to the east of the crash-site may settle it, but this too, is a guess...: