UNC-Chapel Hill's 729-acre (3.0 km2) campus is dominated by two central quads: Polk Place and McCorkle Place.[70] Polk Place is named after North Carolina native and university alumnus President James K. Polk,[71] and McCorkle Place is named in honor of Samuel Eusebius McCorkle, the original author of the bill requesting the university's charter.[72] Adjacent to Polk Place is a sunken brick courtyard known as the Pit where students will gather, often engaging in lively debate with speakers such as the Pit Preacher.