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86 most ancient time, and that for this reason they usually occur on the coast.

The view here expressed as to the origin and nature of the cromlechs acquires greater force and clearness from the circumstance that stone chambers perfectly corresponding to these, but on a somewhat larger scale, are frequently discovered, forming places of interment within large barrows of earth raised by the hands of man. These tombs, covered with earth, have perhaps contained the remains of the powerful and the rich. They are almost all provided with long entrances which lead from the exterior of the mound of earth to the east or south side of the chambers. For this reason it has been proposed to call these structures "passage buildings," (Gang bygningen). The entrances, like the chambers, are formed of large stones, smooth on the side which is turned inwards, on which very large roof-stones are placed. As a single chamber is therefore formed of a considerable number of heavy masses of stone, which would be extremely difficult to set up, independently of placing them on one another, it is highly probable that the name of "Giants' Chambers" may have had its origin in the opinion of the lower classes, that the giants (jætter) who, according to the Sagas, could with ease hurl enormous rocks, were alone able to execute such stupendous works.