Alamo Archaeology Church Preservation - October 17

October 17, 2025

Archaeological investigations continued at the Alamo Church. Archaeologists completed EUs 136 and 134. Excavations began at EUs 142, 149, and 15. EUs 142 and 149 are located on the south side of the Alamo Church and EU-15 is located northeast of the Church and near the entrance to the gift shop.

EU-134 was excavated to a maximum depth of 150 cm below surface. Archaeologists exposed the Church foundation down to the natural hardpan. Additionally, the foundation for the buttress was exposed. A minimum of three construction episodes were identified in this unit. The original foundation construction, a later episode that appears to be the product of repairs to the Church, and a third construction which is likely associated with the late 1800s installation of a police substation.

Archaeologists in EU-136 reached a terminal depth of 100 cm below surface. The most prominent feature in this unit was the limestone alignment, which spans the entire east-west length of the unit. However, another significant feature was encountered. Fragments of a wooden post were found against the façade of the alignment. The post was documented and carefully removed for further analysis.

Excavation unit with rocky tiers to the bottom
EU-134 at 150 cm below surface, photo facing north.
Limestone bottom covered with a dark mud in an excavation unit
EU-136 at approximately 140m cm below surface, photo facing north.
Rocky bottom with stone tiering in an excavation unit
Shell button from EU-136.

Excavations began at EU-139 this past week and archaeologists reached an approximate depth of 20 cm below surface. Archaeologists are still within the modern landscaping deposit, and no historic artifacts were recovered.

Archaeologists in EU-142 finished excavations and began final documentation. Excavations reached a depth of 150 cm below surface. This unit also exposed the same limestone alignment previously encountered in adjacent units. There were several utility conduits, including some that impacted the limestone feature.

Excavations in EU-15 began late last week. Archaeologists reached a depth of 40 cm below surface. This larger unit is the location of a future pier for the future temporary protective structure. The top two levels of this unit exhibited significant disturbance from previous construction.

Flat dirt bottom in an excavation unit with a thin pipe over the top
EU-139 at approximately 20 cm below surface, photo facing north.
Utility conduits across the top of an excavation unit
Completed EU-142, photo facing north.
Dark dirt bottom of an excavation unit
EU-15 at 40 cm below surface, photo facing north.

Most collected artifacts were construction-related such as nails. However two unique artifacts were also recovered: a handmade button and a toy doll’s leg.

Round button found in excavation unit
Button recovered from EU-15.
Porcelain dog leg next to a ruler for size
Doll’s leg from EU-15.