What is another word for natural passage?
Pronunciation: [nˈat͡ʃəɹə͡l pˈasɪd͡ʒ] (IPA) 
The phrase "natural passage" refers to an opening or channel that is formed by nature. Synonyms for "natural passage" could include terms such as "natural canal," "natural channel," "natural waterway," or "natural conduit." Each of these terms suggests a natural pathway that is formed by the environment, whether it be a rocky gorge, a meandering river, or an underground cave system. Other synonyms might include "natural corridor," which implies a pathway that connects two regions or ecosystems, or "natural inlet," which suggests a small opening or entrance point that allows access to a larger body of water or land area. The use of various synonyms helps to capture the diverse range of natural formations that exist in the world around us.
