Secret CavernsA 103-step staircase with various layers of limestone deposited faithfully by the prehistoric ocean is the only way in or out. Many of the caverns in this area were formed largely during the last Ice Age about 38,000-14,000 years ago. “For thousands of years mineral laden water has been precipitating on the walls, ceiling, and floor of the caverns, leaving behind great deposits of golden calcite. When these deposits hang from the ceiling like icicles, they are called stalactites. When they build up from the floor, they are called stalagmites. And when you see calcite dripping down over the walls or covering the rocks, that is called flowstone.” – You will have a wonderful time with all the views mentioned!Then we will return to Boston.