The Pat-kai in Tai-Ahom language are the hills on Indias north-eastern border with Burma. They were created by the same tectonic processes that resulted in the formation of the Himalayas in the Mesozoic. They are not as rugged as the Himalayas and its peaks are much lower in height. Features of the range include conical peaks, steep slopes and deep valleys. Three hill ranges come under the Patkai. The Patkai-Bum (Burmese Kumon Taungdan), the Garo-Khasi-Jaintia, and the Lushai Hills. The Garo-Khasi range is in the Indian state of Meghalaya. Mawsynram and Cherrapunji, on the windward side of these hills are the worlds wettest places, having the highest annual rainfall.