SAN ANTONIO (AP) -- A developer has installed a fence in the process to curtail public access to a cave found at a South Texas construction site.

The San Antonio Express-News ( ) reported Friday that the cave has two chambers about 40 feet high.

Officials with McMillin Land Development plan to use a concrete beam and soil to seal off the cave and develop around the location. The cave was discovered Jan. 30 when a crew trenching for a sewer line punched an opening into what led to the cave.

Geologist Philip Pearce and his team from Pape-Dawson Engineers last month took four days to map the cave amid growing public attention. Pearce found spelunking gear in the cave and saw some formations had been broken.

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