The phrase "mountain regions" refers to areas on Earth that have a lot of big, tall hills called mountains. These areas are usually located higher up and have a different climate and landscape compared to flat or hilly regions. Full definition
The Asian bush mosquito can adapt to natural habitats such as mountain regions as well as to the infrastructure of human settlements. (sciencedaily.com)
It's not that these forests were hidden away in deep valleys or remote mountain regions. (newatlas.com)
Explore mountain regions on a 4 - wheel - drive trip to lush forests and waterfalls. (outrigger.com)