Northeastern Himalayan subalpine conifer forests cover in the southeast Tibetan Plateau, occurring between . The forests are mostly in the Yarlung Tsangpo Grand Canyon, where the Yarlung Tsangpo River wraps around the eastern edge of the Himalayas and descends from the Tibetan Plateau. Tributary valleys of the Yarlung Tsangpo, including those of the Nyang River and Parlung Tsangpo, host connected portions of the Northeast Himalayan subalpine conifer forests. Isolated pockets of this ecoregion also occur in the Zayü River valley and Tawang Valley. Many of these forests are found in so-called inner valleys, which are valleys that are shielded from the South Asian monsoon by mountain ridges but still receive enough precipitation to support thriving forests.