agesilaus wrote:
2) To the north a bit is Sonoma Caverns-its commercial right off I-10
3) McDonald Observatory if you like astronomy.
4) Ft Stockton-the old fort there.
Just to avoid any confusion and to provide additional information:
#2 I believe agesilaus is referring to the Caverns of
Sonora, which is indeed private and close to I-10. I have visited. It is spectacular and there is a RV park there. Nothing fancy, but handy for visiting the caverns.
#3 Reserve a slot for a "Star Party" at the McDonald Observatory (again, if you are into astronomy, as agesilaus says). It is held on certain evenings during the week.
#4 Fort Davis is near the observatory and is a historic site. Both are near Davis Mountains State Park, a nice park which features full hookups and wifi.
I would consider reserving the Star Party and a site at Davis Mountains ahead of time if you care to visit.