dugway
/ˈdʌɡweɪ/Definitions
1. noun
a road or pass made through a hill or mountain by excavation, especially in a desert region.
“The hikers navigated through a long dugway to reach the top of the mountain.”
2. noun
a route made by digging through a hill or ridge, especially in the western United States.
“The pioneer used the dugway to traverse the difficult terrain.”