Pit
Pit noun - A sunken area forming a separate space.
Tunneling
Pit and tunneling are semantically related in covered passageway topic. You can use "Pit" instead a noun "Tunneling".
Cite this Source
Tunneling and Pit. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/pit/tunneling
Pit & Tunneling. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/pit/tunneling>.
Tunneling or Pit. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/pit/tunneling.
Google Ngram Viewer shows how "pit" and "tunneling" have occurred on timeline