The Gog Magog hills are in Cambridgeshire, England, just a short distance south of the city of Cambridge. The name of the hills presents something of a mystery.

There might appear to be Biblical and other religious connotations. “Gog and Magog” are mentioned in the scriptures at Revelation, chapter 20 and “Gog of the land of Magog” appears in Ezekiel, chapter 38. They appear in medieval artwork: the accompanying picture is of "The Gog and Magog people being walled off by Alexander's forces", found in Jean Wauquelin's "Book of Alexander" published during the 15th century in Bruges, Belgium. But rural Cambridgeshire people are not particularly given to religious observance or mythical imagery.

Alternatively, Gogmagog has been identified as a legendary giant in Welsh and later in English mythology. There is a supposed connection to the Welsh name "Gawr Madoc", meaning “Madoc the Great”. But if you are looking for a Land of Giants, then South Cambridgeshire definitely isn't it. The Gog Magog hills are "hills" only by undemanding Cambridgeshire standards (the north of the county is as flat as a pancake). For example, Wandlebury Hill, one of the tallest, is just 74 m (243 ft) high. This is the territory of "Cycling for Softies".

However, the locals just call the area "the Gogs" and do not worry about the etymology.

More Info: en.wikipedia.org