Most Remote Location in California

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franky

Trad climber

Black Hills, SD

Jan 26, 2016 - 01:23pm PT

46381m. Roads end is almost right in the middle.

NutAgain!

Trad climber

South Pasadena, CA

Jan 26, 2016 - 01:36pm PT

It would be cool to overlay a GIS layer that estimates cost or difficulty to traverse each quad/hex cell. As a first pass, try to figure out the "average steepness" of each cell. Perhaps look for maximum statistical variation in altitude from point samples within each cell.

Then the cells could be analyzed in terms of a least-cost path to a road, rather than just "as the crow flies" straight line. One of the interesting challenges of this project would be to determine an optimal cell size for this calculation, to better reflect the real-world difficulty of traversing the cell.

limpingcrab

Trad climber

the middle of CA

Topic Author's Reply - Jan 26, 2016 - 01:37pm PT

43m difference between the two, pretty crazy that it came down to that.

I talked to my "death hike" partners (we try to do one each summer). They said we have to do both. Poop.

Edit: at least we won't have to swim to the middle of a lake

franky

Trad climber

Black Hills, SD

Jan 26, 2016 - 02:23pm PT

Someone plan out the best route to bag both in a day, shuttle allowed. It might not be beyond the realm of someone who is really into suffering.

Banquo

climber

Amerricka

Jan 26, 2016 - 02:40pm PT

So, based on your data, what is the most remote point in Tilden Lake, Macomb Ridge area? It's around 20 km.

franky

Trad climber

Black Hills, SD

Jan 26, 2016 - 02:41pm PT

Nutagain, that wouldn't be tough to do. just need to download the Digital Elevation Models which are free. I don't think Vegetation would play much of a role in the High Sierra, but people will often include that data in such a calculation as well. One difficulty in considering slope is that direction of travel matters (uphill or downhill) but that is harder to model.

k-man

Gym climber

SCruz

Jan 26, 2016 - 02:48pm PT

Nice to see dark green around Big Sur.

I wonder what is the farthest you can get from flight paths. I remember being in JTree after 9/11, and the skies were so quiet. It didn't last long, and when the flights resumed, it was a stark contrast.

franky

Trad climber

Black Hills, SD

Jan 26, 2016 - 03:06pm PT

Banquo, this should answer things. It has the mining road above Leavitt Lake as the nearest road for the region you're talking about, another one where the data might not be great.

Vitaliy M.

Mountain climber

San Francisco

Jan 26, 2016 - 03:12pm PT

I talked to my "death hike" partners (we try to do one each summer). They said we have to do both. Poop.

People that do not climb at the Cookie Cliff...

limpingcrab

Trad climber

the middle of CA

Topic Author's Reply - Jan 26, 2016 - 03:14pm PT

I used something like that when calculating a winter trans sierra route, it's not too difficult with GIS software.

I wonder how you could set it up to find that most difficult place, by its easiest path, to get to in the state. That would take a lot of calculating but if you had a big computer that could sit for a while it should be possible.

franky

Trad climber

Black Hills, SD

Jan 26, 2016 - 03:23pm PT

I think the primary stuff you need to consider are slope and vegetation. I think the best method to consider slope is to use raster math to apply some function of cost vs slope. Arc simply considers the extra distance traveled due to the slope, it'd be better to use a function that takes into account the extra difficulty too, maybe quadratic instead of linear. You would have to use an iterative method to penalize uphill travel after the first pass raster was made (by using the backlink raster), eventually converging on some answer. I think the iteration would be worth it since we all know how much easier downhill travel is than up. To do this type of analysis at sufficient resolution for the whole state would take awhile. you'd have to come up with a reasonable cost that could be tied to vegetation classes, that would also take some dedicated work by an analyst.

missjr

Trad climber

Jan 26, 2016 - 04:13pm PT

This is the furthest point from any road in California, Tunemah Lake. It sits nicely above the Middle Fork of the Kings River and the Goddard Creek drainage. Not an easy walk to get there from anywhere. I believe its 32miles from South Lake out of Bishop and somewhere close to 25 from the West.

limpingcrab

Trad climber

the middle of CA

Topic Author's Reply - Jan 26, 2016 - 04:17pm PT

Franky, give chaparral a value of 1,000,000 in the calculations for difficulty traveling through vegetation types. For reference, give an uphill slope of 45 degrees a value of 7.

Edit: one of the few and proud, missjr! But, did you stand on -118.70208 36.995476?

Definitely fills the "remoteness" bill.

donini

Trad climber

Ouray, Colorado

Jan 26, 2016 - 04:19pm PT

Depends on what you're using.

Risk

Mountain climber

Olympia, WA

Jan 26, 2016 - 04:19pm PT

Franky, thanks for posting up the Wilma-Stubblefield map. The spot I put on my handy park map is right about at the "K" in the word "Kerrick." A place I once passed BITD. More remote feeling near there is the area called Bear Valley in the headwaters of Breeze Creek.