[ken5050]

For reference, is there any scale to give us a sense of the size of the spine?

[cogitator]

For reference, is there any scale to give us a sense of the size of the spine?

Somehow, that last one reminds me of King Kong...

[kayak]

From the link in the write-up above:

The lava dome inside Mt. St. Helens' crater continues to grow. It has been forming a giant, spectacular spine, about 300 ft high and growing at about 4-5 in (ca. 12-15cm) per day.