North and East of Puerto Varas we drove some 15 miles away and up from Lake Lanquillue to The Vincente Perez Rosales Chiléan State Park and the Petrohué Falls.
These are a series of chute waterfalls grinding paths through ancient basaltic lava blasted from the Osorno Volcano that sits between two lakes, the largest, Llanquihue supporting the resort towns discussed in the last post. The water decanted in the lake is clear with a distinct green hue but the cascading torrents from melts of Volcano Orsono carry sand and silt which has ground the walls of its deep crags into glassy surfaces.
|Volcano Orsono, Chilé|
Chilé's most active volcano: Orsrono is a symmetrical and glacier-capped peak which has produced massive lava flows. It's blown from both the summit and from flank vents and fissures along the left face of the image above. Many of its eruptions over the past 14,000 years have created astonishing pyroclastic flows and surges while explosions from its tip have effected world-wide climate effects.
The cone of the mountain sits above a roughly 250,000-year-old stratovolcano whose caldera is deeply glacial scarred and mostly buried today. Interestingly, scientists have measured pronounced increases the size of Osorno's glaciers as they have with glacial growth throughout Patagonia and Antartica. While this glacial expansion's received little media attention, meteorologists have recorded increasingly colder Southern Hemisphere temperatures over the past three or four decades. It's a puzzling activity which astronomers have noted on Mars where northern ice caps appear to be contracting as its southern caps expand.
|Vocanic Danger Zones! Signs found throughout the lake districts, this one explaining|
the various warning levels and evac-routes posted in the media and along roadway billboards.
|Here's the miles-long trail that brought my camera (and virtual easel)|
to the base of Orsono and the cascades gushing from its summer run-off.
Failing to pop an acceptable photograph from the mid-day sun's broiling, here's my imagination's take on Orsono's cone and it's tributaries which form the headwaters of Chilé's Petrohué river.
|A south-western painting of Volcano Orsono and it's glacier-blue/green|
waters gushing along the explosive Saltos Del Petrohué.