He was studying the mountain ranges intently.
Only low brush could grow in so small a space... no trees to prevent a vehicle from plunging into the forested mountain ranges below and beyond.
They were everywhere, like the mountain ranges surrounding their hideout.
Beyond them mountain ranges faded into shades of blue in the humid air.
The basins of the Parana and Paraguay are separated by low mountain ranges extending north from the sierras of Paraguay.