Lava Beds National Monument - Why do people go into caves! One reason at Wind Cave National Park is to view a rare calcite formation called boxwork. This honeycomb appearing formation hangs
Boxwork hi-res stock photography and images - Alamy
Pink Amethyst Tip with Calcite Boxwork - Cod. PTA 260
General : For the Love of ...box work?
Wind Cave National Park | national park, South Dakota, United States | Britannica