The phrase "vast sweep" refers to a large or extensive range or area. It suggests something that covers a wide expanse or encompasses many different things. Full definition
See the mountain in ways you've never seen it before including vast sweeping valley views and breathtaking vistas. (kickinghorseresort.com)
Using a palette knife loaded with several colors, Sonia applied vast sweeps of paint across her canvases in sensuous, energetic full - body movements. (wordsandpaint.com)
Bali, Indonesia, «Island of Gods» is renowned for its spectacular and diverse natural scenery encompassing volcanic peaks, steeply terraced rice fields, vast sweeping tropical beaches, dense forests and lush gardens. (amazon.com)