Real Devil's Thumb Hints
First, a gpx of the options (right-click and choose "save as" on PC; long touch and "download link" on Android). Thanks to Bob Burd for letting me add part of his tracks to the gpx file.

Pics by Harlan W S
April 27, 2021

April 23, 2022 NOTE: The new ascent line was recoated with urethane and UV block today, to reduce abrasion.
There are three major scrambling/climbing steps to the north face route: 1) getting to the top of the first vertical cliff band; 2) getting up the 3+ rock to the upper rap station; and (3) breaking though the last cliff band. You can accomplish (1) by ascending the fixed rope, or by using the creepy ledge bypass described below. From the top of the first cliff band, head climber's left (east) on successively higher, easy ground, till you are stopped by a wall with a small alcove (or cave) at the bottom. Start step (2) here, facing south into the rock, and moving up and right; follow the very textured rock up to the right (west) side of the rappel station. Head behind the rock horn (that holds the rap station slings), and head left and east to a slightly sloped, open area just a few meters away. Then turn R (S) and look at the top cliff band. For step (3), head S and on the R side of a small gully, up highly textured rock; it is steep but just class 3. Be sure to note where you broke through. The summit is just to your L (E).


The rope is near-vertical; DO NOT USE IT AS A HANDLINE-- use ascenders or friction knots (latter preferred, but see below). If you use it as a handline, you will invariably move the rope over the sharp rocks and damage the sheath. Be considerate of those whose future safety you may compromise.  PLEASE DO NOT USE the thick 10.5 mm rope for RAPPELS. The extra urethane coating, which supplies the main UV-resistance, will be worn-off by rappel devices. There is another quicklink, on another line, to use for rappels (someone took the link after 2022). Near the top of this line, the slope lessens, and one can put feet down to partially climb; but stay attached till you are really clear of the cliff.


Bring light harnesses.  Bring 80 feet of 8-9mm rope or 15mm climbspec tubular webbing for two short rappels (the webbing is 2/3 as heavy as the rope).  From personal experience, 75' of 15mm webbing doubled over a biner, with a single munter, was adequate for the raps.

There is a dark sling of  4000 lb test, UV-and-abrasion-coated Dyneema on ANOTHER rock horn at the top of the 3+ section  (section 2). Note this sling is made of pure Amsteel Dyneema. UNLIKE Dyneema slings used in climbing (which are really 35-50% nylon by volume), IT DOES NOT TAKE KNOTS, but the class 2 eye splices on each end (by the rapide)  have 100% rope strength. The urethane UV-resistant coating may make the slings feel stiff or sticky. PLEASE EXAMINE the 4000 lb sling, end-to-end, before you use it. Some of the UV coating wears off the outermost fibers in each rap, so it gets a gray-flecked appearance, but unless you see major breaches, you have nothing to worry about. Remember that Dyneema is used in bear bags, cut-proof gloves, and bullet-proof vests.
If you pull the sling over the horn to "equalize" it for your intended descent line, you are probably doing the only thing that can damage it; the rock friction around that horn resists body weigh, and you will be effectively dragging the sling over a file. I have seen many nervous people rap off that sling using "just" the 4000 lb loading on one side, and the other side doesn't budge. All dark ropes should be replaced by 2027. Someone put a white dyneema/nylon sling up at the horn; UV will hit that hard, and it isn't mine.


There is a second, longer sling of black urethane/UV coated, 2500 lb Dyneema on the same horn. I put this sling up there 11/20/2022, and intend to bring it home and break test it in 3 years (if I'm still around). You can use it if you like, but don't give me crap about shock-loading if you choose to use it in conjunction with the shorter 4000 lb sling. For the record, the "new" 2500 lb sling replaced a NON-UV-coated 2500 lb sling that had been up there for 3 years, and still had 71% of the original strength. Someone took this down in 2023/24.

The GPS shows more road options for more modest vehicles. The first part of south route (via the Loran Road) is 2wd, and can be done by modest-clearance vehicles (verified 01/08/2022). (The older traditional approach is labeled "Bob," and has some rough sections.) The most irritating part of the Loran Road is a patch of old pavement; even though this section rarely has more than 1" topography, an inattentive driver can drop off the ragged edge. From the end of the Loran Road, one can either take a dirt bike on the rest of the blue road that takes a sharp left (and heads roughly NW), or use the short "extrawalk" segment across the desert to join Bob Burd's hike track. The last, NW-trending section of road has some substantial side-to-side uneveness, but is mostly composed of dirt (some loose sand); if you choose to drive this with a marginal vehicle, be sure to have a shovel and some method to escape loose sand, such as thick carpet strips, a board, or even your floor mats.

Besides the rope assist, there is a pure ledge route that is not for the squeamish. The "ledges" are at times on a 60 degree angle, and there is one corner that requires one to step down to pass an obstacle, and even though the fall might be 8-20', it would be onto sharp rocks and a slope. This route is not for really tall people or really short people. However, excellent balance and flexibility help a lot. Except for the psychology, if one has no trouble with some awkward routes in Red Rock (e.g. the one 4th class traverse on Tinaja Peak), this is doable but a lot creepier. I found just the ocstacle on the ledges was really creepy.
Even if you took the ledge route up, you will absolutely not want to take it down.



The best way to see how the pieces of the normal route fit together, is to view this drone video. This shows Tracy
using the OLD ascend line to rap. This line was farther east and harder to use.

drone1
image from video
drone2
image from video


At some point I may move the new ascend line up eight feet; but it has a hook onto which an 8 mm double rope, or etrier, can be dropped. I will put a notice here if that change ever happens.


0map0
context map
1map0
the hikes
20210427_114715
View of thumb from
blue Anji rte. One
goes around the
left side of the
summit block to
N face.
20210427_114715a

Now at bottom N face.
Entry to ledge rte.
This and the next
5 pics show the
ledge route; for this
row, the camera is
pointed UP, so the
steepness is not
obvious.
20210427_114715b 20210427_114715c
At LEFT of this pic
is new ascent ROPE,
tested with ascenders
and friction knots.
20210427_124052
Now, a view of
the ledge as the
climber sees it.
This is actually past
the worst section.
The old ascend line
blew up on the cliff,
so I took this route
to knock it down.
20210427_124057
My pack below,
 and blue shoe.
20210427_124516
Looking back W
over the route.
20210427_132829
From the summit:
Castle Peaks CA
to R.
20210427_132836
Sprit Mt to S.
20210427_132842
Pinto BM to N.
20210427_133210
Off N side
20210427_145824
View from Anji Rte
IMG_1464
From the rock
horn used to achor
a handline/rap
line. There is currently
a blue 2500 lb
test, 16' sling on the
horn. 75' of 15 mm
 climbspec webbing,
doubled, is enough for
a single-munter rap
on a small biner.

IMG_1465
Bob calls this stiff class 3;
indeed there are no
challenging moves.
However, you will want
double your holds as the
cobbles do occasionally
pop out, and the results of
fall would be at least grave
injury (the old
definition of class 4)

IMG_1481
At the rap horn,
head slightly east, then
  south and UP to the
one break in the cliffs.
Here Tracy downclimbs
from that break.This
extra strap has been
removed, and is not
needed if one is slow.
IMG_1482b
Another view of Tracy
setting up to rap back
 down to ledge that
has ascend rope.
IMG_1483 IMG_1484
Friction knots: The rope is so frictional, a normal pursik knot may need only 4 turns (2 on each side). TRY TO FIGURE HOW MANY TURNS YOU NEED AT THE BOTTOM OF THE ROPE. Remember it is hard to free a prusik knot unless you twist it top-to-bottom. Schwabish knots work much better, or Blake's hitches (4-turn) tied with 8 mm ropes.

The oldest ascender/friction-knot line WAS REMOVED from the higher horn, but now there is a NEW ROPE (shorter and thicker) to the WEST of the original line. The new line is 10.5 mm polyester rope coated with an extra UV- and abrasion-protectant layer. (NOTE this 10.5mm line is too stiff to use with ascent systems that require a 180-degree turn for progress-capture!)   HOWEVER, the climbing rope is anchored 30' back to a rock horn.  The anchor rope is composed of thin, but 8000 lb test dyneema, also double coated with UV- and abrasion-protectant urethane. There is an independent 8000 lb test dyneema anchor with quicklink 15' up near the ascent line; it has a thick urethane coating, which is somewhat broken in places, showing the original gray color, but IT IS STRONG..

WEAR A HELMET if taking the ROPE! If you use the ascent  rope, DON'T WORRY ABOUT LEDGES ROUTE.