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352 mounds, bear a very close resemblance to those of Quiengola in Oaxaca (p. 175). A feature of this district 1s constituted by the number of cave-temples, which again recall the last-named province of Mexico. It is perhaps worthy of mention that a tendency appears in this neighbourhood to arrange temple-mounds in groups of three, in a straight line from north to south, with the stairways facing west. The western position of pyramid stairways, which implies that the worshippers faced east, has already been observed in Oaxaca and Mexico. An account of certain ruins at Utatlan, Iximché and Rabinal is given in the works of Maudslay, but they cannot compare with those of the central Maya area, and seem rather to resemble those of the district of Huehuetenango.

The Maya appear to have resorted occasionally to caves as dwelling-places, and certain investigations have been made in caverns at Copan and Loltun (immediately south of Uxmal), in Yucatan. The remains however do not imply that their occupation was of early date, and it is probable that the caves served as places of temporary refuge in times of war. This chapter would be incomplete without some mention of the peculiar bottle-shaped subterranean structures found at certain sites in Yucatan. These are known as "chultunes," and, since they invariably occur at places remote from rivers, may almost certainly be regarded as cisterns for preserving a supply of water, though in some cases they have served the secondary purpose of burial chambers. They are lined with dressed stone or a coat of stucco, and the mouth is furnished with a stone ring which is closed by a slab. Careful exploration of the chultunes at Labna has been made by Thompson and reported in the "Memoirs" of the Peabody Museum.

It will be unnecessary to enter into a discussion of Maya art, since the subject has been fully treated by Spinden in a monograph which was published only a