1

You got me.
The only place in the entire southwest that closes in summer is the Death Valley Inn as far vas I know. Death Valley itself stays open year round. It once held the record for the hottest place on Earth. Death Valley is in southern California just west of the Nevada State line.

2

If your "keen" to go to a place with no name that may, or may not be open... I'll suggest you plan on stopping & viewing the "Thing" roadside attraction near Wilcox... You then will, have seen something ! Please, a trip report... carracar

3

I've seen reports that Picacho State Park is closed in summer, but it is not clear that that is or ever was true.

4

Organ Pipe National Monument??? It is open year round.

5

You're "keen to go" to a park who's name you don't know, location you're only vaguely aware of, and about which the only information you can provide is "might be closed in summer"? Why so keen? What's the interest?

Frankly, it doesn't matter if any of the designated "parks" officially close in summer - most would be mightily unpleasant and they might as well be closed that time of year. There are many national, state, and county parks in Southern Arizona, and millions of acres of federal lands with wonderful scenery. Most are hot in summer, some higher elevation areas would be quite pleasant. Maybe some additional information could narrow things down a bit.

6

thanks guys I know it was vague but it was something that nagged at me - I've been searching too i think it was in guide book, I'll keep looking.Maybe it was that ranger walks/tours are only conducted in winter. I'm keen because seems a good opportunity to really get out into desert (sonoran I think) without the discomfort/danger

7

Well if that's all yer after, just pick a nice week in winter or spring and fly down to Tucson...hit up Saguaro National Park, Sabino Canyon, Tucson Mountain Park, or any of the foothills trails outside the city in Coronado National Forest. Gorgeous desert mountain scenery, cactus forests, the unique and surprisingly abundant greenery of the Sonoran desert all await you.