Mr. Merritt and others mention that in some of the graves pillars are employed to support the roof of the cist. These pillars are mentioned briefly by De Zeltner, from whose account the following illustrations are drawn. This author does not state that he made any personal investigations, and if his accounts were obtained from the natives their entire trustworthiness may very properly be questioned. The first two forms mentioned by him are similar to those already given. The third is described as having at the corners square pillars of stone to support the covering, which, however, is not described. The fourth has four pillars, placed in the corners of the pit. These serve to support a vault of flagstones. The walls between the pillars are faced with pebbles, as in the cases previously described. Fig. 3 will make this form clear at a glance. The fifth variety described by De Zeltner is quite extraordinary in construction. His account is somewhat confusing in a number of respects, and the section given in Fig. 4 cannot claim more than approximate accuracy in details and measurements. Near the surface a paving, perhaps of river stones, was found covering an area of about 10 by 13 feet. This paving was apparently the surface of a pack about 2 feet thick, and covered the mouth of the main pit, which was some 6 or 7 feet deep. Pillars of cobble stones about 10 inches in diameter occupied the corners of the pit, and probably served in a measure to support the paving. In the bottom of this excavation a second pit was dug, the mouth of which was also covered by a paving 2½ by upwards of 3 feet in horizontal dimensions. This lower pit consisted of a shaft several feet in depth, by which descent was made into a chamber of inverted pyramidal shape. This chamber approximated 6 by 9 feet in horizontal dimensions and was some 4 or 5 feet deep. At the bottom of this cistern the human remains and most of the relics were deposited. The shaft was filled in with earth and the pavings described. The total depth, computed from the figures given, is about 18 feet, a most remarkable achievement for a barbarous people; yet this is equaled by the ancient tribes of the mainland of New Granada, where similar burial customs seem to have prevailed. Mr. White,[7] who traveled extensively in the northwestern part of the state, says: