Pokemon Sword & Shield - Part 4 - Rolling Fields (Open Area) - YouTube
Here is a map of the Wild Area with all raid den locations, taken from a JP wiki, along with a link to all raid encounter tables in the game. (See comments
Max Raids - Rolling Fields - Wild Area | Pokémon: Sword & Shield | Gamer Guides®
Rolling Fields Map and Obtainable Pokemon | Pokemon Sword and Shield|Game8
Rolling Field (Wild Area) - Pokemon Location | Pokemon Sword Shield - GameWith