Not quite what you might see in Zion National Park, but this slot canyon gives you some wonderful sights and an experience your kids would not soon forget. From the center of town, head south on Borrego Springs Road and turn left on Highway 78 (about 11 miles). Be sure to stop and check out the metal statues along the way (check Galleta Meadow Estates). Once on Highway 78, drive about 1.5 miles til you see a dirt road marked Buttes Pass on the left. Really easy to miss! Pay close attention.
Follow the dirt road about a mile to the parking area. Watch out for areas of soft sand if you dont have 4 wheel drive. We did not and were ok but use caution. The trailhead is not clearly marked. You'll likely see other cars parked. Go straight ahead and down into the slot. Looks steep but its not so bad. It really does look scarier than it is, but with caution should be no problem. My son (almost 5) did this with no issues. Use caution, and common sense. The hike through the slot canyon itself is mostly flat -- once you get past the climb down about 50 ft its easy peasy from there. Turn left and enjoy the sights along this short walk through the slot canyon. Once it widens out far enough for a jeep to fit (we saw tire tracks) just turn back and go up the way you came.
Tip: We marked where we started off at with little rocks. When you get back it might be tricky to remember where you go up exactly.
I gave this a 4 only because there are no restrooms, and the road may be a bit rough. Not close to much of anything but open desert. Plan accordingly.