San Marcelino is a municipality located in the province of Zambales, Philippines. It is known for its beautiful landscapes, including mountains and beaches, making it a popular destination for nature lovers. The town has a rich cultural heritage and is home to various local festivals that celebrate its history and traditions. The economy of San Marcelino is primarily based on agriculture, with many residents engaged in farming and fishing. The area is also known for its production of rice, corn, and other crops. Additionally, the town's proximity to Subic Bay enhances its potential for tourism and trade.