West Thumb Geyser Basin is one of the smaller geyser basins in Yellowstone, yet its location along the shore of Yellowstone Lake and is ranked as the most scenic. This area was formed by volcanic explosion that took place more than 150,000 years ago. After the volcano exploded, the area collapsed and filled with water over time. It gets its thermal abilities from the enclosed magma trapped in the ring fractures that developed over time.In the 1990's several underwater geysers were discovered. These geysers can be seen as bulges underground, especially during the summer months. The basin is also special because of its location in Yellowstone. The West Thumb Geyser Basin is located on the edge of Yellowstone Lake.

This area features many other springs in the area. As surprising as it is, this area is also one of the least visited areas within Yellowstone. There are boardwalks all along the basin, making it an easy walk to see the beautiful hydrothermal springs in the area. West Thumb's name is derived from the thumb-like projection of Yellowstone Lake and the name was given by the 1870 Washburn Expedition. It was also known as Hot Spring Camp. West Thumb has less geyser activity than other basins. However, amazingly for its size it has all — hot springs, pools, mud pots, fumaroles and lake shore geysers.

Old Faithful is a cone geyser located in Yellowstone National Park in Wyoming, United States. It was named in 1870 during the Washburn-Langford-Doane Expedition and was the first geyser in the park to receive a name. It is a highly predictable geothermal feature, and has erupted every 44 to 125 minutes since 2000. The geyser and the nearby Old Faithful Inn are part of the Old Faithful Historic District.Courtesy of en.m.wikipedia.org

The Grand Prismatic Spring Overlook Trail gives hikers an opportunity to see the famous aerial view of the Grand Prismatic Spring. The vibrant rainbow waters of the Grand Prismatic Spring are best viewed from above.

The forested trail provides for a invigorating, short hike up to the overlook. From the overlook hikers have a sweeping view of the entire Midway Geyser Basin. Seeing this active geothermal area from above provides a unique perspective that you don't want to miss. This geyser basin is famous for the variety of color that can be seen here.

The Grand Prismatic Spring Overlook Trail is a 1.2 mile out and back hike that can be completed in less than 2 hours. The trail has some steep incline to get to the viewing point, but most hikers can tackle the hike. This trail is open in the winter, summer and fall, and closed in the spring. This hike is one of the more popular hikes in Yellowstone, so hikers will not be hiking alone. 

The trailhead is located in the Fairy Falls Parking Lot, one mile south of the Midway Geyser Basin.

The Grand Prismatic Spring Overlook Trail is the best trail to take for view of the Grand Prismatic Spring and Midway Geyser Basin.

Meandering 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.