The Hanto Mountains were a mountain range on Sulon. Two tall jagged peaks that seemed close together were referred to as "the twins".[1]
They separated a continental semi-arid region of the planet that included Nefra Canyons, from the farmed regions that included Barons Hed and Fuel City.[1]
While the Moldy Crow was fleeing from the Fuel City, Kyle Katarn advised Jan Ors to retreat to the Nefra Canyons in order to lose the pursuing TIE/LN starfighters. While approaching the Mountains, the Crow rolled and passed between the twins, followed by one TIE, but the one following scrapped a side of a peak, exploded, and caused an avalanche that reached the base of the mountain.[1]