LiDAR: Colorado 13ers and 14ers Completed

[Candace66]

To be on the safe side, I'm going back through any 13ers with known summit structures (towers, buildings, ruins, tall poles) to make sure the structures were excluded. Can anyone think of any others I could look at? So far I've checked the ones below:

Quail Mountain (cabin ruins)
Fairview Peak (fire lookout tower)
Horseshoe Mountain (old building)
Mt Eva (radio tower)
Tower Mountain (radio tower)
Kuss Peak (building/radio tower)
Peak 8 (small radio tower)
Peak 10 (large pole)
Clinton Peak (large pole)

North Arapaho? It used to have a huge pile of rocks on top, I don't know if it's still there.

[bdloftin77]

For anyone so inclined, I believe I found a ranked summit in Utah that was missed on LoJ for some interesting reasons/topography.

Coordinates:

37.41811,-110.16284

Good find! We'll have to keep that in mind for when there's coverage for that area.

To be on the safe side, I'm going back through any 13ers with known summit structures (towers, buildings, ruins, tall poles) to make sure the structures were excluded. Can anyone think of any others I could look at? So far I've checked the ones below:

Quail Mountain (cabin ruins)
Fairview Peak (fire lookout tower)
Horseshoe Mountain (old building)
Mt Eva (radio tower)
Tower Mountain (radio tower)
Kuss Peak (building/radio tower)
Peak 8 (small radio tower)
Peak 10 (large pole)
Clinton Peak (large pole)

North Arapaho? It used to have a huge pile of rocks on top, I don't know if it's still there.

Thanks! That large cairn was excluded.

[Flyingfish]

To be on the safe side, I'm going back through any 13ers with known summit structures (towers, buildings, ruins, tall poles) to make sure the structures were excluded. Can anyone think of any others I could look at? So far I've checked the ones below:

Quail Mountain (cabin ruins)
Fairview Peak (fire lookout tower)
Horseshoe Mountain (old building)
Mt Eva (radio tower)
Tower Mountain (radio tower)
Kuss Peak (building/radio tower)
Peak 8 (small radio tower)
Peak 10 (large pole)
Clinton Peak (large pole)

I seem to recall there being a huge cairn on "Baldy no es Cinco"

[bdloftin77]

To be on the safe side, I'm going back through any 13ers with known summit structures (towers, buildings, ruins, tall poles) to make sure the structures were excluded. Can anyone think of any others I could look at? So far I've checked the ones below:

Quail Mountain (cabin ruins)
Fairview Peak (fire lookout tower)
Horseshoe Mountain (old building)
Mt Eva (radio tower)
Tower Mountain (radio tower)
Kuss Peak (building/radio tower)
Peak 8 (small radio tower)
Peak 10 (large pole)
Clinton Peak (large pole)

I seem to recall there being a huge cairn on "Baldy no es Cinco"

Yep, this was excluded. Thanks!

[JoeGrim]

For anyone so inclined, I believe I found a ranked summit in Utah that was missed on LoJ for some interesting reasons/topography.

Coordinates:

37.41811,-110.16284

The topo map is wrong, the creek/creek-bed actually cuts through the rock wall where the red line is marked (approximate). The big bed around hasn't been the creek-bed for probably thousands of years and is an interesting abandoned meander.

I suggest you let John Kirk know about it now, so that it can make it into his data base as a potential ranked peak. Then, once we get LiDAR coverage for that area, feel free to remind us to analyze it. I'm guessing there's a ~98% chance it's ranked, based on previous experience analyzing peaks with 360' interpolated prominence.

[Scott P]

For anyone so inclined, I believe I found a ranked summit in Utah that was missed on LoJ for some interesting reasons/topography.

Coordinates:

37.41811,-110.16284

The topo map is wrong, the creek/creek-bed actually cuts through the rock wall where the red line is marked (approximate). The big bed around hasn't been the creek-bed for probably thousands of years and is an interesting abandoned meander.

I suggest you let John Kirk know about it now, so that it can make it into his data base as a potential ranked peak. Then, once we get LiDAR coverage for that area, feel free to remind us to analyze it. I'm guessing there's a ~98% chance it's ranked, based on previous experience analyzing peaks with 360' interpolated prominence.

I put in on the LoJ forum hoping that he would see it:

https://listsofjohn.com/board/viewtopic.php?f=1&t=1447

[Scott P]

Not a 13er or 14er, but this was one of the most interesting findings:

https://listsofjohn.com/peak/218487

The map was pretty far off on this one and everyone has been climbing the wrong summit.

[JoeGrim]

I hope those visiting it in the past came from the correct direction, or brought a hand level and noticed it could be higher.

Here's another crazy find: https://listsofjohn.com/peak/218489
Map prominence was a measly 128', while actual prominence is 313'!
and no, this wasn't a case of one peak replacing another; the map was that far off!

[Scott P]

I hope those visiting it in the past came from the correct direction, or brought a hand level and noticed it could be higher.

All but three did Red Mountain at the same time so came from the north.

Only John Kirk posted a GPS track though. If John Kirk missed the true summit it must be unobvious that the other point is higher since he seems meticulous about those kinds of things.

Screenshot_20230226_071519_Chrome.jpg (127.74 KiB) Viewed 4076 times

That one you point out is crazy as well.

[DaveLanders]

Here's another crazy find: https://listsofjohn.com/peak/218489
Map prominence was a measly 128', while actual prominence is 313'!
and no, this wasn't a case of one peak replacing another; the map was that far off!

No, it really was 1 peak replacing another. Mineral Hill on the NW corner of the Boreas Pass quad was ranked because it was higher than the 10868 map elevation. After 10868 got raised to 10906 it was now higher than Mineral Hill, so Mineral Hill got demoted. It's true that the saddle elevations on the LOJ entry for 10906 are very different for LiDAR versus the map but I think that's because it is referencing different saddles.

[JoeGrim]

Thanks for the correction, Dave.

[bdloftin77]

But there have been some pretty big map errors.

Eli’s WY Sharks Nose find was pretty big map vs lidar prominence difference (175’).

John’s CA Maclure Peak find bumped it up from interpolated 12,900’ to a low 13er.

I’m looking forward to the Sierra Nevada lidar being available for download sometime in mid 2024 (their estimate).