Winter Palace Hidden Hallway

Winter Palace Hidden Hallway is a Side Quest in Mario + Rabbids Sparks of Hope, located on the planet Pristine Peaks, specifically inside the Winter Palace. In the hallway where the heroes first encounter Midnite, there is a destructible wall that has Coins hidden behind it, but there is another destructible wall afterwards, containing a treasure chest behind it. Once the heroes open it, the quest is complete, and the heroes are awarded a Planet Coin.