Foothill
/ˈfʊthɪl/
Definition 1 of 1
Pro Tip 1/3Geographical Term
Primarily used to describe the low hills near larger mountains, rarely for other contexts. 
We went hiking in the foothills just outside the city.
Pro Tip 2/3Not High Mountains
Remember, foothills are not the same as mountains — they're smaller and lower. 
From the foothills, the towering peaks seem even more majestic.
Pro Tip 3/3Starting Points
Foothills often serve as starting points or gateways for mountain exploration or settlements. 
The trail begins in the foothills before ascending steeply into the mountains.