Located to the west of the Shillong plateau, Diengiei Peak is just two hundred feet lower than Shillong peak. The peak presents a spectacular view of green mountainous hills. The captivating hills are dotted with tiny shining villages. Diengiei Peak is accessible by the Umiam-Union Christian College-Mawmaram motorable road which takes off from National Highway-40 at Umiam. Atop Diengiei, a visitor is greeted with a commanding view of the Umiam lake with the city of Shillong in the background. On the top of Diengiei, there is a huge hollow, shaped like a cup, which some geologists believe could be the crater of an extinct pre-historic volcano.