Located ten miles north and east of Grace along the original Oregon Trail is the City of Soda Springs. It is blessed with natural effervescent mineral springs that bubble from its carbon dioxide content, hence its name. It is the county seat of Caribou County and the largest of the three communities in the county. One of its most popular attractions is Hooper Springs, where tourists can enjoy sampling the soda water.
To access, turn north at the stoplight on the east edge of town, go straight north until the road turns west, then follow it to the west for another one half mile. In the downtown portion of Soda Springs is the only captive geyser in the world.
It is turned on every hour on the hour and will reach heights up to 150 feet. North of town along highway 34 is the Monsanto Chemical Plant that produces elemental phosphorous. Just south of the plant is a huge slag pile where you can occasionally see the red hot slag poured out along the edges of the pile and appear like a lava flow.