Review for Deadwood Mountain Grand Hotel & Casino Review For Deadwood Mountain Grand Hotel & Casino Google User Jan 21 '19 at 15:14 First time in Deadwood SD and was more than pleasantly surprised by the Deadwood Mountain Grand experience. How cool to develop a piece of Deadwood history, formerly the Deadwood Slime plant, into a splendid entertainment venue. We attended a show during the Red Dirt festival in which "Scooter Brown Band" had played...they were great. The staff behind the scenes, Susan and her team,were extremely accommodating and super helpful. I look forward to visiting again the near future and thank you to the Holiday Inn Resort. View full site to comment or like