Lost River Caverns
726 Durham St, Hellertown, PA 18055, USA
About
A guided 45 minute limestone cave tour along paved, well-lit paths. Admission: ~$16.50 for adults, ~$11.50 for children (3‑12); under‑3s are free. Tours require advance reservation. Outside, enjoy a free nature trail loop of ~15–20 minutes and optional gem-panning at modest cost.