Sitting Bull Crystal Cavern Dance Pavilion
... that many of the traditional Lakota ceremonies performed at the Sitting Bull Crystal Cavern Dance Pavilion were still illegal under federal law during the show's first years?
... that many of the traditional <a href="./Lakota_people" id="mwBT4" rel="mw:WikiLink" title="Lakota people">Lakota</a> ceremonies performed at the <b id="mwBT8"><a href="./Sitting_Bull_Crystal_Cavern_Dance_Pavilion" id="mwBUA" rel="mw:WikiLink" title="Sitting Bull Crystal Cavern Dance Pavilion">Sitting Bull Crystal Cavern Dance Pavilion</a></b> were still illegal under federal law during the show's first years?