Pedernales is a barrio in the municipality of Cabo Rojo, Puerto Rico.

[3][4][5] Pedernales was in Spain's gazetteers[6] until Puerto Rico was ceded by Spain in the aftermath of the Spanish–American War under the terms of the Treaty of Paris of 1898 and became an unincorporated territory of the United States.

In 1899, the United States Department of War conducted a census of Puerto Rico finding that the population of Pedernales barrio was 2,060.

The boulders in the Guaniquilla Lagoon also in Pedernales, date back 11,000,000 years.

This Cabo Rojo, Puerto Rico location article is a stub.