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Underground river seen cause of beach collapse


OLONGAPO CITY—The team of geologists that was sent to investigate a supposed sinkhole in Candelaria, Zambales, said the presence of an underground river channel in the area could have caused the collapse of a section of a beach in Barangay Uacon there.

Graciela Macabare, head of the provincial disaster risk reduction and management council in Zambales, said the team, led by the Mines and Geosciences Bureau (MGB), conducted shoreline mapping, beach profiling and echo sounding in the area affected by the erosion.

“[The team members] said they did not find a sinkhole in the waters off Uacon beach,” Macabare said.

Instead, the geologists saw an underground river channel and they surmised that the continuous flow of water hastened the collapse of at least 100 meters of shoreline.

Macabare said the team is still conducting tests and has yet to issue an official report and recommendations to address the erosion, which residents observed on Saturday afternoon.

Off limits

Residents and patrons of resorts in Uacon were asked not to enter the area, which had been cordoned off, to ensure the unhampered work of the team. Swimming was also banned.

“Aside from the initial findings, they have not given any recommendation so far. They need to gather more data and process it in Manila,” Macabare said.

She said the geologists are expected to finish collecting data for their ground and marine study late on Thursday.

“What they’re doing now is finding out [the dimensions] and characteristics of the underground river channel. But they assured us that there was no longer any danger in the beach area,” she said.

In a statement, Pancho Caculitan, a marine geologist from the MGB and the supervising science research specialist of the marine investigating team in Uacon, said the sea bottom condition in the area looked stable.

The river channel was detected through an echo-sounding study that created a topographic map of the area, he said. Robert Gonzaga, Inquirer Central Luzon


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Tags: Candelaria , Geology , Sinkhole , Underground River , Zambales




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