NASA releases a photo showing another mountain range on the lower left edge of Pluto’s heart-shaped region. The peaks are about 1 to 1.5 km (0.5 to 1 mile) high, about the size of the Appalachians. The new range is just west of the region within Pluto’s heart called Sputnik Planum (Sputnik Plain) and some 110 km (68 miles) northwest of Norgay Montes. This newest image further illustrates the remarkably well-defined topography along the western edge of Tombaugh Regio.
There is a pronounced difference in texture between the younger, frozen plains to the east and the dark, heavily-cratered terrain to the west. There’s a complex interaction going on between the bright and the dark materials that we’re still trying to understand.