The Hallett Nature Sanctuary is at the southeastern corner of Central Park.[22][27][28] It is the smallest wooded area at 4 acres (1.6 ha).[29] Originally known as the Promontory, it was renamed after civic activist and birder George Hervey Hallett Jr. in 1986.[28][29][30] The Hallett Sanctuary was closed to the public from 1934 to May 2016, when it was reopened allowing limited access.[31]