What is skinwalker ranch season four?

As an AI language model, I don't have information on Skinwalker Ranch Season 4 as it has not been officially confirmed yet. However, there have been rumors suggesting that the History Channel has renewed the show for another season, and it could possibly air later this year or in 2022. The show follows a team of researchers and experts as they investigate the strange and unexplained phenomena occurring on Skinwalker Ranch in Utah. Some of the reported phenomena include UFO sightings, animal mutilations, and paranormal activity. As of now, there has not been an official announcement regarding the release date or the cast of the upcoming season.