The beetle and the feedback loop

The valleys of the Interior of British Columbia are like slashes in the Earth’s skin — deep, steep, dramatic, falling precipitously into dark, narrow lakes. The landscape looks like frozen violence, the product of a time when tectonic plates collided, their edges crumpling and folding under the unimaginable force of crustal jockeying.

But the violence is not frozen, and the jockeying is not over. The plates are still moving. Their sudden shifts are earthquakes, and their vents are volcanoes. These mountains and valleys are part of a stupendous "Ring of Fire" that surrounds the entire Pacific Ocean.

We think of geology as finished, complete, the world having been made ready for its masters. But geology is never finished. Nature is always a work in progress. On our recent trip, Marjorie and I enjoyed the hot springs of Ainsworth and Nakusp. What heats that water? The hell-fires in the basement of the mountains.