R03/R01 TR: Evolution Basin, McGee Lakes, Davis Lake, Ionian Basin, September 2024
Posted: Sat Apr 12, 2025 8:09 pm
Early September last year, my wife and I went on a nine-day trip. Route: Lamarck Col, Darwin Bench, Evolution Basin, McGee Lakes, Davis Lakes, Wanda Pass, Ionian Basin, Black Giant Pass, Helen Lake, and back on the JMT to Lamarck Col.
Two years earlier, I accidentally left a small thermometer hanging on a tree, like a Christmas decoration, near McGee Lakes. The following year was a high-snow year. One objective of this trip was to try to retrieve the thermometer.
Climbing up to Lamarck Col, we met a ranger coming down.
Closer to the Col, I felt altitude sickness.
Daylight ran out before we got down to the lakes in Darwin Canyon.
We camped on the slope in a well-established spot. Water was barely accessible in a small creek deep under rocks.
Sunrise on Mt. Darwin and Mt. Mendel:
Darwin Bench:
Evolution Lake from Darwin Bench:
We met @jdongg before Evolution Lake.
Evolution Lake:
Sunset over Sapphire Lake outlet:
Sunset on Mt. Huxley and Mt Fiske over Sapphire Lake:
Two years earlier, I accidentally left a small thermometer hanging on a tree, like a Christmas decoration, near McGee Lakes. The following year was a high-snow year. One objective of this trip was to try to retrieve the thermometer.

Climbing up to Lamarck Col, we met a ranger coming down.
Closer to the Col, I felt altitude sickness.
Daylight ran out before we got down to the lakes in Darwin Canyon.
We camped on the slope in a well-established spot. Water was barely accessible in a small creek deep under rocks.
Sunrise on Mt. Darwin and Mt. Mendel:
Darwin Bench:
Evolution Lake from Darwin Bench:
We met @jdongg before Evolution Lake.
Evolution Lake:
Sunset over Sapphire Lake outlet:
Sunset on Mt. Huxley and Mt Fiske over Sapphire Lake: