A pre-placed enclosed chamber, which is usually constructed of reinforced concrete, poured in place or precast unit installed in quantity, either side by side or multiple depth, and covered by earth or sod and also may be known as a garden crypt

An underground mausoleum. Double-depth vaults are installed upon a gravel lateral drainage system. Sod is placed on top of the crypt area and memorials are installed. Usually several hundred lawn crypt units are placed side by side to create a lawn crypt garden.

a subsurface burial container installed in multiple units that has a system for drainage and moisture control