Island Lake - Michigan, USA | SnowRunner Interactive Map - Hidden Upgrades, Vehicles, Cargo Depots, Watchtowers, Achievements, Easter Eggs and more! Report Bug / Suggest Feature. I won’t list each and every location. In this section of our SnowRunner guide, we will reveal the location of hidden vehicles and upgrades in all regions of the game: Michigan, Alaska and Taimyr. The island … Upgrade … South of the lake at Dadaupa Gorge, in the big building. Additionally, the Winter … Location of Illinois in the United States . While Alaska also has four locations such as Pedro Bay, Mountain River, North Port, White Valley.