Nature
CANYON
A canyon is a deep, narrow valley with steep sides, usually carved by a river over long periods of time. The Grand Canyon in Arizona was cut by the Colorado River over millions of years. The word comes from the Spanish 'canon', meaning 'tube' or 'pipe'.
CANYON is the kind of word that shows up in themed word searches like Strands. Themed puzzles group words like this under a shared category — here, Nature.