Abstract: A storm cellar or the like is disclosed composed of a pair of portable upper and lower pre-cast concrete sections one of which seats in an inverted position on the other to define a closed compartment. Each section includes a portion of a stairway of conventional configuration, the portions matching when the sections are assembled to extend from the lower level of the top of the assembled cellar to near its floor through aligned openings in the walls of the sections, thus permitting the cellar to be fully buried in the ground while at the same time providing ready access to the cellar from ground level without requiring that any portion of the cellar itself protrude above ground level.