HILLSBOROUGH, NJ — Tucked away off Amwell Road lies an immersive healing experience complete with a salt cave for adults and children. Hillsborough mother of three Alaina Molesko opened The ...

A salt booth: A 10-minute express version of the salt cave. Facials, massages and energy healing: Booked separately with the spa's team of estheticians and massage therapists.

Israeli researchers say they have discovered the world's longest salt cave. The 10km (6.2 miles) of passages and chambers inside Malham Cave, overlooking the Dead Sea, were mapped out over two years.