Structure 1505, masonry surface structure

About this Structure

General Location

Block 1500, west-central portion of site, east of plaza.

Specific Location

West side of the D-shaped building, between an unexcavated room to the north and Structure 1503 to the south. Structure 1505 is also located below Structure 1525, an inferred second-story room.

Interpretive Type

Not assigned.

Structure Use

Few data on which to base an inference of use, although the location of this room in a D-shaped, bi-wall structure might indicate special use. A couple of pieces of ground stone were the only artifacts found on the portion of the the floor that was exposed. Near the top of the extant portion of the west wall was a ledge upon which the roof of this structure purportedly rested. Because the wall continued above this ledge, it is inferred that there was a second-story room above Structure 1505. The fill of Structure 1505 had apparently been too disturbed by pothunters and animals to reflect the original number of roof-fall strata so this line of corroboration of a second story could not be observed. If the "ledge" is indeed the level of a lower story roof, this roof would have been high enough off the floor for an adult to stand beneath in the southern end of the excavated portion of the room. However, the up-sloping bedrock outcrop in the northwest portion of the room brings the floor level up to within approximately 1.1 to 1.2 m of the ledge on which the roof beams purportedly rested. Thus, an adult would not have been able to stand upright in the northern portion of the room and would have been obliged to approach the doorway in the north wall either bent over at the waist or in a crawl. Even so, this might have been the only lower-story room in this architectural block in which an adult could stand upright. This room is so narrow it might have just been a corridor originally. The doorway in the north wall of the room indicates that there was thus originally access between this room and the unexcavated, unnumbered room to the northeast. This doorway was later plugged with masonry, suggesting that the use of the room(s) changed at some point, or the pattern of access changed, or both. This doorway could have been designed to be used only during the construction of the architectural block and to be blocked upon completion of the building. However, the careful construction of the doorway suggests that this was not the case. Because the south wall of Structure 1505 was not located or exposed, it is not known if there was access into this room through the south wall, or if access was through a hatchway in the roof after the north doorway was blocked.


The lack of artifacts on the floor suggests a leisurely abandonment.


Animal and pothunter disturbance have obliterated much of the evidence of postabandonment events; however, it appears that the roof was not burned, but that it rotted and collapsed, and the walls (and roof?) of the upper story collapsed into the room as well. In modern times, pothunters and animals churned the fill and some artifacts might have been removed.

Excavation Details

No excavation details recorded for this study unit.