2017-07-08-15-17-56.jpg Stanislaus Peak and North-west ridge of Sonora PeakMiniatureStanislas Peak from St Mary's PassStanislaus Peak and North-west ridge of Sonora PeakMiniatureStanislas Peak from St Mary's PassStanislaus Peak and North-west ridge of Sonora PeakMiniatureStanislas Peak from St Mary's PassStanislaus Peak and North-west ridge of Sonora PeakMiniatureStanislas Peak from St Mary's PassStanislaus Peak and North-west ridge of Sonora PeakMiniatureStanislas Peak from St Mary's Pass
These are rock formatons made 150,000 years ago after basalt lava flows cooled down slowly, forming columns with regular geometric shapes (mostly hexagons. Their diameter varies from 10 to 40 cm.