thumb|right|Welcome Sign to the Blue Hole National Park
right|thumb|The Blue Hole
St. Herman's Blue Hole National Park is a national park located just off the Hummingbird Highway in Cayo District, southeast of Belmopan, the capital of Belize. It covers an area of and contains two cave systems (St. Herman's and Crystal) and a jungle pool called the Blue Hole for its vivid color.
Geography and archaeology
It is part of the foothills of the Maya Mountains. The park is on a forested ridge between two valleys, each with a river, the Sibun River and its tributary the Caves Branch. The cerulean warbler is classified as vulnerable.