About Happy Jack Chalk Mine
The Sandhills have an underground surprise near Scotia. Happy Jack Chalk Mine opens a network of pale, hand-cut passages beneath its namesake peak. The old room-and-pillar workings form a honeycomb of caverns, and the exposed rock even preserves traces of ancient animal burrows. It is a striking change from the open North Loup River valley visible aboveground.
The mine supplied chalky stone for local construction, but its unusual layout now makes it a place to explore rather than extract. More than 6,000 feet of passages lie under the hill. Guided visits explain the geology and the labor behind the tunnels; the property also offers hiking and broad views from the peak.
The grounds are free to visit, while entry into the mine requires a paid tour. Regular tours are seasonal, generally from Memorial Day through Labor Day, with off-season visits by arrangement. Check the operator’s schedule before driving out, and bring a layer for the cool interior. The combination of a prairie summit and an underground maze makes this one of Nebraska’s stranger two-level stops.