Rock columns with plants growing above and below

These rock columns were formed thousands of years ago when lava erupted and cooled. The lava shrank and cracked as it cooled down, forming rock columns shaped like hexagonal prisms.

Columns become bent or curved if they cool unevenly. They may have been in contact with ice or water.

Basalt columns are the most famous type, but these are actually made of a similar rock called andesite that is common on Mt. Rainier.

Visited: September 3, 2022 at 9:34 AM

Location: Wonderland Trail/South Puyallup Camp