Mesa Falls
Ashton, Idaho
10.0 miles NE of Ashton, IdahoUpper Mesa Falls, aka Big Falls, is an absolutely awesome waterfall on the Henrys Fork of the Snake River. The falls drop 114 ft. and measure 300 ft. across. To get to the falls from the parking lot is 0.2 miles of paved walkway and several sturdy stairs with plenty of gaurdrails and handrails. There are several platforms along the route for viewing and taking photos. Catch it in the morning to see the rainbows in the lingering mist that often rises well above the platforms. There's a wheelchair accessible path that can get a pretty good view of the falls but does not go right down to it.
Lower Mesa Falls is about a mile down river from the Upper Falls. There's two great viewing options. One is from a cliff hovering 200 feet above the falls and the other is from the the Observation Site sitting 0.25 miles away and almost 500 feet above the falls. To get to the cliff above the falls, there's a trailhead on the South East end of the main parking lot. The trail is 1 mile each way (2 mile out and back) with about a 100 ft. difference in elevation (about the same as the stairs the the Upper Falls platforms). The trail goes through the woods well away from the river itself but there are no guardrails at the end when you're peering over the edge of the cliffs to see the waterfall. To see the falls from the observation site is free and the walk from your car to the lookout is only about 500 ft.
This is an Idaho State Park and there are day use fees. Passes have reciprocity with Harriman State Park which is only about 20 minutes away. Get there before 5pm to check out the old inn which has been transformed into a fun and informative visitor's center.
Fall Creek Falls
Swan Valley, Idaho
2.1 miles SW of Swan Valley, IdahoFalls Campground is located next to the Snake River near beautiful Swan Valley, only 45 miles east of Idaho Falls, Idaho. Mixed growth cottonwood trees provide partial shade, and grassy meadows with summer wildflowers dot the area. Wildlife is plentiful in the river bottom; eagles, osprey, moose, and deer are frequently spotted. Fall Creek Falls is about 1/4 mile from the campground. The Snake River offers excellent trout fishing, canoeing, rafting, and kayaking. Spring Creek and Conant Boat Ramps, open to the public, are nearby. Palisades Reservoir is less than 20 miles from Falls Campground, with great boating, waterskiing, canoeing, fishing, and swimming.
Jump Creek
Marsing, Idaho
7.1 miles SW of Marsing, IdahoA surprising waterfall and lush riparian community filled with waterbirch and red osier dogwood trees. Visitors can hike the easy ¼ mile Jump Creek Falls Trail - you may get your feel wet! - walk high and dry to the Falls Overlook on a recently improved trail, or picnic near the rock crevices and meandering stream. Swimmers will find a refreshing dip at the base of the falls.
40 Horse Cave
Firth, Idaho
11.9 miles E of Firth, IdahoThe naming of the cave comes from a story of two men who were caught in a bad storm. Upon hiking, these two guys were able to find the cave. One of them commented to the other, "This cave could hold about 40 horses." Another legend tells of a theif that hid 40 horses in the cave to avoid capture. Either way, there's no doubt that 40 horses would fit in the cave.
The hike up to the cave is steep. Elevation gain may only be about 100 feet but even the longest trail is still just under 500 feet (0.1 mile) to the cave. Once you find the trailhead, it's really easy to find. You'll just hike uphill until you come to a large opening in the mountain. The shorter trail has a lot more shale and is a pretty difficult scramble. The longer trail is still steep and difficult but there is much less shale.
Flashlights aren't required, as the cave is only about 50 feet deep. There are a few corners of the cave that are a little more fun to explore with a flashlight.
At the bottom of the trail is a culvert and when the water is higher, it's a fun place to splash around after the hike. You'll see a trail in the willows on the SouthEast side of the road near the culvert. If you follow that trail only about 100 feet of easy hiking, you'll find a smaller cave.
Cress Creek Nature Trail
Rexburg, Idaho
11.9 miles S of Rexburg, IdahoMeandering along the scenic South Fork of the Snake River, the beautiful 1¼ mile Cress Creek Nature Trail will lead you on a journey through sagebrush-grass communities, over juniper covered slopes, and along a lush perennial creek. Cress Creek derives its name from the watercress plant, a favorite food of the moose that live in this area. With clear skies, prepare for an expansive view of the Snake River, volcanoes and farmland. The site offers ample parking, restrooms and trail accessibility, which attract a wide spectrum of trail users to the area. You will become familiar with life in the Cress Creek area as it is now and as it was long ago. If you hike quietly you may see deer, rabbits, small lizards, or possibly an eagle or a moose. The nature trail is self-guided with many beautiful interpretive signs posted along the way to assist you. The first half-mile of the trail is accessible by wheelchair.
On the northeastern corner of the trail, there's an overlook trail. Parts of it are pretty nice like the rest of the loop but some is barely recognizable as a trail. Parts of the trail are steep and parts of it go over some pretty loose rock. It goes for about a ½ mile all the way to the top of the hill. Just below the rim, there are several really cool caves. From the top, you can see from Rexburg to Idaho Falls.
Monkey Rock
Saint Anthony, Idaho
4.1 miles SE of Saint Anthony, IdahoMonkey Rock features a beautiful waterfall you can wade right up to during the summer. Just under the waterfall is a great spot to wade around in or even some shallow swimming pretty good for small children. Maybe you just want to take advantage of the great bank to bask in the summer sun. The water temperature is fairly cool, which by no means is unwelcomed during the hot summer months. You'll get used to the water fairly quickly once you're in. The waterfall is a fun feature at Monkey Rock, not to mention a popular engagement photo backdrop. The name "Monkey Rock" is derived from the "monkeys" who jump off the rocks at the top of the falls to the pool below. Though not a great height, it's important to be careful and only jump into areas clear of rocks and other hazards and where the water is deep enough that you won't hit bottom when you jump. There really isn't a safe spot to jump from the falls as it doesn't usually get more than 5 feet deep.
The real jumping location is off the Hog Hollow Bridge up the road from the waterfall.
PLEASE NOTE: On the roads leading to Monkey Rock, the speed limit is 35 mph for the last mile. There are kids, cows, horses, and dogs along that road and many people tend to speed going to and from Monkey Rock. Please slow down and stay safe.