Robert W. Limbert demonstrates his shooting skills for the purpose of illustrating his educational colum on revolver shooting that ran in the magazine Outdoor America from the Izaak Walton League of America.
Four men from the June 1921 expedition examine a large crater in the volcanic floor, including Robert W. Limbert (far right). A rifle sits in the distance.
Three men from the expedition rest while traveling over the volcanic ground. Ad Santel (left) holds a camera while one man drinks from a canteen and another holds a rifle.
Robert W. Limbert and his exploration party stop to pose on a large volcanic mass. Two men stand on parts of the volcanic rock, while another man sits inside.
A line of pack horses make a half circle as they cross the volcanic soil of the Craters of the Moon area. The horses are barely distinguishable from the rocks on the right side of the photo, about a quarter of the way down from the top.
An unidentified man crouches down to explore the ripples of the lava fields. He holds a shotgun in his right hand while touching the ripples with his other hand.
An example of the "Blue Dragon Lava Flow" that explorer Robert W. Limbert wrote about in his National Geographic article. "This remarkable flow is well named. Its surface is netted and veined with small cracks like scales of a prehistoric monster,...
The lack of roads across uneven volcanic ground made this expedition into Craters of the Moon dangerous and tiring for both the men and animals involved.
Four men from the expedition examine the lava formations while carrying rifles and camping supplies. From left to right: Ad Santel, two unidentified men, and Robert W. Limbert. This photograph was printed in the 1924 National Geographic article,...
Five male explorers rest in the cave that explorer Robert W. Limbert named Amphitheater Cave. Limbert described the cave as being "explored for half a mile underground until we came across apparently fresh bear tracks when we turned around and came...
The 1921 expedition members pose for a photograph in front of a natural bridge. The bridge was named by Robert W. Limbert and W. L. Cole in 1920 after a man on the trip hit his head on the underside of the bridge hard enough to bring tears to his...
Printed in Robert W. Limbert's National Geographic article on his expeditions, this is an interior shot of what he called Amphitheater Cave in Craters of the Moon. "This is one of a series of eight caves found near the Bridge of Tears. It is an...
A row of hundreds of people from the neighboring town of Arco line up to greet the expedition upon their arrival at the end of the trip. A large picnic followed in town.