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How are the parallel hill ranges of Tripura arranged?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Map highlighting the state of Tripura in northeastern India, shown in orange with its capital Agartala labeled. Surrounding countries including Bangladesh, Myanmar, China, Nepal, Bhutan, Pakistan, and Afghanistan are also visible, with the Bay of Bengal and Indian Ocean to the south.
Tripura

The hill ranges of Tripura are arranged as a series of parallel, north-south-trending folds that separate four major valleys.12

These ranges exhibit a distinct pattern of elevation:
* West-to-East Increase: The elevation of the ranges increases progressively from west to east. The westernmost hills, such as the Deotamura Range, are the lowest, while the ranges to the east rise significantly higher.12
* Specific Ranges: Moving from west to east, the primary ranges include the Deotamura, the Athara Mura, the Langtarai, the Sakhan Tlang, and the Jampai Tlang (or Jamrai Tlang) range.12
* Geographic Context: These hills form a western extension of the Purvachal and are separated by valleys carved by northward-flowing rivers, such as the Khowai, Dhalai, Manu, Deo, and Juri.12

As the ranges extend southward, they gradually decrease in elevation until they merge into the lowlands of the Ganges and Brahmaputra river basins.12