3 results
    1

    Upton Cave

    MA    
    Caving 

    0 out of 5 based on 0 ratings

    In the center of New England, a landscape formed by very old orogenies and the glaciers of the last Ice Age, only very few and small natural caves exist. The rocks are gneiss, granite, marble and slate. The caves are tecto... showcaves.com

    2

    Boston Grotto

    Cambridge, MA    
    Caving 

    0 out of 5 based on 0 ratings

    1st Wed. MIT Bldg. 32, Rm. 32-124, Alternate rooms nearby nssio.org

    3

    Nashoba Brook Stone Chamber

    Acton, MA    
    Caving 

    0 out of 5 based on 0 ratings

    The Nashoba Brook Stone Chamber is an L-shaped, man-made room, 3.35m long, 2.74m wide and at its highest point 2.74m high. It is constructed of local stones of extraordinary size, the ceiling is constructed by only five ab... showcaves.com