Idaho Vacation: EBR-1, The World's First Nuclear Reactor



Highway Historic Marker at Rest Area on Highway 20-26
near EBR-1 Atomic Museum



EBR-1 made history about 60 years ago by producing the world's first usable electrical power using atomic energy.  A tour of this National Historic Landmark makes a great Idaho vacation. 

Experimental Breeder Reactor-1 generated electrical power on December 20, 1951.  This marked the first time in the world usable electrical power was produced from nuclear fuel.  The facility, located in the desert 18 miles southeast of Arco and 50 miles west of Idaho Falls, is just a mile off of US 20, 26.  In 1955 nuclear power from this reactor lit up the city of Arco, the first city to be lit by atomic power.


Arco, Idaho City Hall With Signage Showing It To Be
 First City in World To Be Lit by Atomic Power


The entire EBR-1 building was turned into an Atomic Museum after the reactor was decommissioned in 1964.  President Lyndon B Johnson dedicated EBR-1 as a National Historic Landmark in 1966. 

The museum is open from 9am – 5pm daily from Memorial Day through Labor Day weekend.  Tours are free and can be either self-guided or guided.  Photographs are not only allowed in this nuclear reactor but encouraged. 



EBR-1 National Historic Landmark, World's First
Nuclear Power Plant

 The unimpressive exterior of EBR-1 belies what is inside.  Each of 15 marked exhibits have extensive explanations of not only what one can see but educational information on the processes of converting atomic fuel into usable electricity.  This is truly an educational experience.  The self-guided brochures add to the information presentation. 

A new exhibit opened in 2011 showcasing EBR-2, the successor to EBR-1.  EBR-2 operated from 1964 until 1994.  This exhibit has replicas of the control room and main floor of the reactor.  EBR-2 was larger and more advanced than EBR-1 and supplied most of the electrical power needed by the National Engineering Laboratory while it was active. 

Outside, near the parking lot, are two aircraft nuclear engine prototypes.  They were never commercially developed. 


Sign at Highway Turnoff at EBR-1 Atomic Museum



The emphasis throughout this one-of-a-kind Atomic Museum focuses on education and the history of nuclear power.  One can follow the pioneers of nuclear power development through the well signed exhibits as well as their theories about nuclear power.  Signage in the EBR-2 room even takes a look into the future about the possibilities of nuclear power development. 

Take an hour to visit this museum while traveling through the Idaho desert.  Idaho Falls is 50 miles to the east, Blackfoot 40 miles to the southeast, and Arco is 18 miles northwest.  Just another 20 miles west of Arco is the famous Craters of the Moon National Monument.  This is one great Idaho vacation stop. 

Additional Information:

EBR-1 - http://www.inl.gov/ebr/

Arco Chamber of Commerce - http://www.arcochamber.com/communityInfo.asp

Idaho Vacation: Cave Falls

Cave Falls is not actually in Idaho but in the western edge of Wyoming and also in the southwest corner of Yellowstone National Park.  I list it under Idaho vacations as the only road to the falls is through Idaho. 


Cave Falls in Yellowston National Park on Fall River


Cave Falls at 250 feet wide is the widest of Yellowstone's many waterfalls.  The falls is only about 20 feet high but is a beautiful waterfall on the Fall River.  It is perhaps the easiest waterfall to access and enjoy in the southwestern portion of Yellowstone.  Due to the large number of waterfalls in this region, this corner of Yellowstone is commonly referred to as "Cascade Corner".



Couple Enjoying View of Cave Falls in Yellowstone
National Park on Fall River

 From Ashton or Island Park, the falls is accessable via the Mesa Falls Scenic Byway, ID-47, and the 16 mile long Cave Falls Road (FR 582 after entering the Targee National Forest).  Winter access is by snowmobile.  The western end of the Cave Falls Road (also known as the Marysville Road) is paved but that lasts only a few miles before the road turns to gravel/dirt.  The road was quite washboardy when we traveled it and I suspect it is that way most of the time it is open.  When the road crosses into Wyoming, the road is again paved, a welcome relief.  Shortly after entering Wyoming, you are greeted by an "Entering Yellowstone National Park" sign. 



Fishing Below Unnamed Falls on Fall River in
Yellowstone National Park

 At the parking area for the falls there is another unnamed falls that stretches across the Fall River that is only 8-10 feet high.  From the parking area, it is a walk of 100 yards or so to Cave Falls.  Cave Falls is named after the cave that is at the base of the falls.  A rock slide currently has the trail blocked for the last 50 feet below the falls. 



Fishing Below Cave Falls on Fall River in
Yellowstone National Park

 Fly fishing is very popular in Fall River in this area.  Much of the upper end of Fall River is in a canyon and difficult to access.  Also in this area is the junction of the Bechler River and the trailheads for several other trails that provide access to Yellowstone backcountry.  Fishing inside the park requires a National Park permit.  Fishing outside the park but on the Wyoming side of the border requires a Wyoming state licence. 

The Bechler Ranger Station is just a couple miles from Cave Falls and there are National Forest campgrounds in the area.  This is bear country so travel and recreate accordingly.  It is recommended that you have a bear bell and pepper spray with you at all times.  The campgrounds are supplied with bear proof food storage containers. 

This is a beautiful area with lots of water features, wildlife, and wildflowers.  Because of the remoteness and ruggedness of the area, visitors should take precautions to make sure they have planned for the unexpected.  Use common sense and visits to this area will create memories to last a lifetime. 

Information Sources:
Yellowstone National Park -
Mammoth Backcountry Office
PO Box 168
Yellowstone National Park, WY 82190
Phone: 307-344-2160
http://www.yellowstone-natl-park.com/bechler.htm

Ashton - 
Ashton Chamber of Commerce, PO Box 351, 714 Main St., Ashton, ID 83420
email: info@ashtonidaho.com, Phone 208-652-3355, Fax 208-652-3567
http://www.ashtonidaho.com/,

Caribou/Targhee National Forest, 1405 Hollipark Drive, Idaho Falls, ID  83401, (208) 524-7500.
Ashton/Island Park Ranger District - Hwy 20 in Ashton, website is here