Hike to Forty Foot Hole

Park your car at the Boulder Picnic Area and the trailhead will be at the northwest corner of the parking area. Follow the well marked trail for about a quarter of a mile until you reach a fork. If you want to land at the top of the canyon go right, if you want to swim at the bottom of the canyon head left. Both paths are easy to navigate so don't sweat it if you head the wrong way. Once you are in the canyon there are a couple of entry points into the water. You can also continue north and follow the river to a couple of small waterfalls. There are some nice spots for rock climbing on the east and west side of the canyon, so bring your gear if you are equipped to climb.

Make sure you are back at your car before sunset, the road to the Boulder Picnic Area has a gate that the refuge closes at sunset. If you are unaware of this there is a chance you will get locked in for the night if you are late getting out.

Most people stop at the canyon, but the Kite Trail continues on for about another mile to Lost Lake.

Forty Foot hole is a well known area in the refuge so go the extra mile and grab a few pieces of trash laying around on your way out. Also, if you are hiking during warmer months keep an eye out for rattlesnakes. 

Be sure to stop in Meer's for a great burger when you leave the refuge. Last time I was there they didn't accept credit cards, so bring some cash.