Castor River Camp Site is a dispersed camping area accessible via the Castor River Camp Road (a 1. 1-mile branch off Bollinger County 736) in Bollinger County, Missouri, offering a secluded hilltop camping spot surrounded by woods.

The road features coarse gravel with mild grades and occasional shallow creek crossings; conditions vary seasonally, with potential for deeper water crossings during heavy rain.

The site provides access to nearby orange and yellow hiking trails and is ideal for those seeking a remote camping experience, though it sees heavy use during hunting season.