A number of foundation braces also contain inner benches along rear walls. In some cases, new foundation braces are placed over existing ones, suggesting a long occupational history for several residential locales. They consist of stones of varying size stacked up to one meter in height without mortar. The basal course is usually composed of larger stones set upright. Some albarradas are associated with the foundation braces of Group A. Others, located northwest of the aguada , seem to be late constructions, as they pass over earlier constructions including Sacbe 1.
Fortification walls are different from albarradas in terms of scale and function.
They are designed to restrict access to certain areas by wholly or partially enclosing them. Well-preserved sections have a height of two meters and a width of three meters. The fortification walls are not continuous, but incorporate existing structures into the defensive system.