I don't know if I passed on the information that I've GPS the Fort Geiger site at DeVall's Bluff, The fort covered about a 200 sq. foot area. The Memphis & Little Rock Railroad ran along the south edge of the fort as it neared the Basin. I've traced the movements of the 8th Missouri Volunteer US Cavalry from DeVall's Bluff to the Battle of Brownsville, August 25, 1863, by their ammunition scattered along the way. They were armed largely with a not so common weapon the "Union Rifle", also known as the Cosmopolitan Carbine. David Casto and I have worked on some of the 8th Mo. Cav. buried at Austin, Arkansas during the War and reinterred to the National Cemetery in Little Rock on August 1, 1868. I found this lost and abandoned cemetery at Austin about three years ago. It is now known as the Austin Pioneer Cemetery, the graves date from 1831 until 1864. It's listed on Find-A-Grave along with some of its history. I do a power point program and give tours of the site.