The Hollow's first Indian visitors named it "Sica," (pronounced she-cha) meaning evil or bad. Eerie Sioux legends recall mysterious happenings here. Along the Trail of the Spirits, you'll see gurgling reddish bogs, which Indians saw as the blood and flesh of their ancestors. Indian lore gives new meaning to Sica's streams, rustic bridges, waterfalls, and wildflowers. An interpretive guide is available to bring these legends to life.