
Palouse Falls: Wanapum and Grand Ronde basalts.

Palouse Falls: Wanapum and Grand Ronde basalts.

Palouse Falls: Wanapum and Grand Ronde basalts.

Palouse Falls: Spires. This fractured formation is about 24 feet tall (7 meters) and shows the interface between the Wanapum and Grand Ronde units of the Columbia Basin basalts.

Palouse Falls: Spires. This fractured formation is about 24 feet tall (7 meters) and shows the interface between the Wanapum and Grand Ronde units of the Columbia Basin basalts.

Palouse Falls: Path.

Palouse Falls: Path.

Palouse Falls: Stonecrop.

Palouse Falls: Stonecrop.

Palouse Falls: Riffle.

Palouse Falls: Riffle.