Malundwe consists of three peaks along a ridge running north and south.

Malundwe's south peak is the highest point in the park, reaching 1,290 metres (4,232 ft) elevation.

[2] 228 species of trees, shrubs, lianas, herbs, and ferns live in the forest.

Eight tree species found in the submontane forests – Allanblackia stuhlmannii, Beilschmiedia kweo, Dasylepis integra, Diospyros amaniensis, Leptonychia usambarensis, Leptonychia usambarensis, Polyscias stuhlmannii, Uvariodendron usambarense, and Zenkerella perplexa – are endemic to the Eastern Arc forests.

[1] The submontane forests are home to the Usambara Thrush (Turdus roehli), which is endemic to the Eastern Arc forests, and to eight other bird species which are near-endemic, found in the Eastern Arc forests and one other ecoregion – Shelley's greenbul (Andropadus masukuensis), Chapin's apalis (Apalis chapini), Forest batis (Batis mixta), Fülleborn's boubou (Laniarius fuelleborni), Spot-throat (Modulatrix stictigula), Green-headed oriole (Oriolus chlorocephalus), Sharpe's akalat (Sheppardia sharpei), and the Green barbet (Stactolaema olivacea).