Costumed youngsters trick-or-treat for gemstones and fossils in the beautiful candle-lit Cave. FREE family hayrides on the Brigham Trail from Cave of the Mounds to Brigham County Park and back. FREE scavenger hunt, coloring contest and more. FREE buried bones activity in our Quarry's Edge Fossil Dig. Bonus trick-or-treat for kids wearing a costume. Sugar-free FUN for the whole family!
- Times: 9:00 AM to 5:00 PM
- Admission: Reguar Cave Tour rates apply, many above ground activities are FREE