During our recent (first!) trip to DL, we took a ride on the Mark Twin riverboat. (Actually, DS6 was driving, so we had the captain, Elizabeth, all to ourselves!) As we came to the Indian village, I heard the elder speaking, and I asked Elizabeth, "Is that Sioux?" She said she didn't know what the language was, only that it was authentic. Does anyone know anything more about this? I'm pretty sure it is Sioux, and I'm curious what the elder was saying. Now that would be a good trivia question!