Critical Thinking Difficult Issues: Unsafe Deposit Glenn Adamson National Museum of the American Indian, Washington, DC. What would burn, they burned. They crushed the rest underfoot. And when they were done, they blew up the whole thing with dynamite. The year was 1935. The setting, just a few miles outside of Spiro, Oklahoma. Centuries earlier, indigenous Americans had invested this site with great spiritual significance. On top of a sacred mound built by their own ancestors, they constructed a hollow chamber and placed within it a cache of valuable objects: textiles, engraved shells, copp...