October 7, 2012

Ptarmigan Ridge and the Portal

Filed under: Geology, Hiking, North Cascades — Tags: — geezerwriter @ 1:23 pm

We had ten hikers for our trip to Ptarmigan Ridge this year. (You can see more about this and all of our hikes on DJan’s blog.) Some people wanted to extend the hike further than usual by going on to the “Portals” and others did not want to stay out so late, so we split up the cars and riders accordingly. Actually we all made it a bit further out than in the past, arriving at this nice little lunch spot under Coleman Pinnacle with a grand view of the rest of our route out onto Mount Baker. You can just see the “Portals” in the distance way over on the right edge of this picture.

Lunch time

Lunch time

OK, it’s time to show you a better picture of the “Portals” and get rid of those quotation marks. A quick dictionary check yields:

Portal: a doorway, gate, or other entrance, esp. a large and elaborate one.

There is actually only one portal here – a large gap in a dark lava rock ridge that is a waypoint on a once popular climbing route for Mount Baker. The left and right “door jambs” of this portal apparently acquired the names “East Portal” and “West Portal” over time, and the whole melange came to be called the “Portals”. My grammatical pickiness just can’t abide this sort of nonsense so I’m going to call it The Portal. I’ll give in and accept the conventional names for the its two sides (which I have to admit sound better than “East-” and “West Door Jamb”) but I just can’t stand that misbegotten plural.

Baker & the Portal

Baker & the Portal

The route to East Portal goes off the right side of that picture, curves around and re-emerges on the ridge line that passes behind Mike at the cuff of his left sleeve and proceeds along the edge of the snow up to a point directly below the “P” of “East Portal” and then hooks to the right. It looks like there is a lot of snow to cross but not so – 3 or 4 patches that were nearly level and not icy.

Right behind Mike’s left hand you can see a sharp change in the color of the rocks: slightly greenish medium gray rocks of the Chilliwack formation underneath darker reddish-black, and much more recent, lava rock. (The picture below shows where we crossed this dramatic unconformity about an hour later.) It is my understanding that this darker rock is a lava flow from Mount Baker and this is a graphic demonstration of the fact that Baker is just a big, beautiful carbuncle perched on the surface of the much more ancient “basement rocks” that comprise the North Cascades.

Where Baker begins

Where Baker begins

The rest of the pictures were taken after we reached East Portal. This shows Baker with West Portal on the right.

Baker from East Portal

Looking past West Portal to Baker from East Portal

Looking down into the Portal

Looking down into the Portal

Avalanche Gorge & Rainbow Ridge

Looking southeast across Avalanche Gorge to Rainbow Ridge

End of the trail

Admiring the views of Mount Blum and the Pickets

And finally, Steve showing off his mountain climb skills (and a measurable amount of sheer lunacy) on East Portal.

Showing off

Showing off

1 Comment »

  1. Oh, GREAT pictures, Al. I wondered how your trip to the Portals went. Thanks for letting me see what I missed. It does look like you’re walking right onto Baker. It’s almost time for me to get out of bed and begin my day… Glad to be home.

    Comment by DJan — October 8, 2012 @ 6:26 am

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