Skystone

Skystone
Glacial erratic rock
Coordinates47°09′14″N 122°11′41″W / 47.153807°N 122.194685°W / 47.153807; -122.194685 (Skystone)
Composition
Andesite

The Skystone is an andesite glacial erratic boulder in Bonney Lake, Washington. The boulder was deposited approximately 13,000 years ago. The stone's height and width are 4.5 by 12 feet (1.4 m × 3.7 m).