Our drive to Crater Lake took us through a nearly flat valley of several hundred square miles, bordered on three sides by mountains and to the south, Upper Klamath Lake; Oregon’s largest lake. Other than the occasional ranch homestead and barns, the entire area appeared fenced off into possibly hundreds of large cattle crazing areas … a few pastures for horses
we headed counter-clockwise around the lake’s Rim Drive, so that the sun would be behind us for most of the day-long drive. Before ever seeing the lake, we stopped for a short hike through a wildflower preserve
For informational purposes, Crater Lake was formed after major eruptions of Mount Mazama (which put more than 100 times the amount of matter into the atmosphere as did Mount St. Helens) some 7,700 years ago depleted its underlying magma chamber and the 12,000’ summit collapsed about 6,800 years ago, creating a six mile wide caldera. Over the ensuing centuries after the floor of the caldera cooled, it filled with rainwater and snow melt. Today, it loses approximately 34 billion gallons of water a year through seepage and evaporation. However, it gains an almost identical amount from snow melt and rainfall, resulting in a roughly static water level over time.
Crater Lake is the deepest lake in America with a maximum depth of 1,943’;and an average depth of 1,148’. While the lake’s elevation is 6,173’, the highest of the caldera cliffs soar more than 2,000’ above the surface of the lake.
The question always arises as to, Why the lake’s water is so blue?
- As light passes through the water, its various wave lengths are absorbed, beginning with reds, then oranges, yellows, greens and blues. Only the deepest blues are scattered and reflected back to the surface.
- Crater Lake is one of, if not the clearest and least polluted lakes in the world. Tests performed by scientists have demonstrated that at times objects as deep as 150’ can still be seen from the surface.
Interestingly, with very shallow depths right at the shore line and in a lagoon on Wizard Island, where some of the green wavelengths are reflected back, the water appears almost an almost iridescent green.We also took a side trip within the Crater Lake National Park to see the “pinnacles”.
These are the remains of fumaroles, vents created by hot gases escaping from within volcanoes which are subsequently filled with lava which hardens. When the surrounding rocks are eroded away, only the lava cores remain.
Throughout the park, white bark pines are seen, particularly along the rim. These hardy trees are constantly buffeted by prevailing winds, snow, rain and blowing sand. As a result, their foliage grows only on their lee sides.
and enjoy a variety of flowers along the roadside