What is another word for adit?
Pronunciation: [ˈadɪt] (IPA) 
Adit is a term used for horizontal entrances to a mine or a tunnel usually made to access underground deposits of coal, minerals, or other resources. Instead of using adit repeatedly, there are some synonyms such as entryway, tunnel, portal, or mine entrance. The entrance to a mine is usually the way miners utilize to extract metals or other materials. An adit could be long or short and had a specific direction, but it is commonly straight, particularly when it is built from the surface to the deposit location. Some adits are drilled at an upward angle, following a mineral formation beneath the ground.
