Woodside Anticline

January 5, 2025

I started off the new year with some easy, close-to-home hiking in the Woodside Anticline area. I drove south just far enough that I could avoid any snow or mud, just beyond Woodside, then turned west along the Green River Cutoff Road. There I parked and hiked about three quarters of a mile across a barren, gray flat to a survey marker. The final approach to the marker was up a short hill and ended atop a long north-south ridge that forms the eastern boundary of the anticline. The marker was set below the ground surface and I had to dig to find it. Luckily it was in the first spot I attempted to excavate.

A flat, barren walk
A flat, barren walk

Train heading north
Train heading north

Climbing the hill
Climbing the hill

Witness post
Witness post

Wooden survey tower
Wooden survey tower

Rider on the trail below
Rider on the trail below

The survey marker after I dug it up
The survey marker after I dug it up

Wood 1974
Wood 1974

View south along the ridge
View south along the ridge

View north along the ridge
View north along the ridge


I took a less direct route back to the truck and found some fossils, including a couple of ammonites, and a section marker from 1923. I made a mental note to come back here to try finding more ammonites that might be worth collecting. I was grateful for the metal brace panel in the barbed wire fence that made it easy to negotiate.

Ammonite fossil
Ammonite fossil

Fossil shells
Fossil shells

Section marker and cairn
Section marker and cairn

Fossil rocks in the cairn
Fossil rocks in the cairn

1923 section marker
1923 section marker

Maybe another ammonite?
Maybe another ammonite?

Helpful fence brace
Helpful fence brace


Next I drove into the heart of the Woodside Anticline to a basin in the head of the Left Fork of Summerville Wash where, in Google Earth, I’d spotted what looked like a drill hole and accompanying debris. It wasn’t until after this trip that I did some research and learned from this 1956 report that the well was called the No. 1 William Fitzhugh. It was started in 1923 and finished in 1924, and contained “helium in notable quantities“.

History of William Fitzhugh Well
History of William Fitzhugh Well


I walked all around the area and saw a lot of things left behind from the drilling of the well. There were timbers and smaller lumber, rusty cans and containers, bricks, and burned coal. One interesting feature was a large pit with timbers sunk vertically in it. I can’t imagine what it was used for but it is visible in the 1938 aerial imagery of the area. The well pipe was capped but had an opening on top which had gas venting from it. It smelled like petroleum to me (maybe that’s just what it smells like deep underground), and I meant to drop a small rock down it but as I was photographing the stuff on the ground I simply forgot to. A dam and pond on a nearby hillside is also visible in the 1938 imagery and was surely used to store water for the drilling operation.

Parked near the drill hole
Parked near the drill hole

Can lid
Can lid

Pit with buried timbers
Pit with buried timbers

Phillips 66 oil can
Phillips 66 oil can

Large timber
Large timber

Old wood
Old wood

More wood
More wood

No. 1 William Fitzhugh well
No. 1 William Fitzhugh well

Welded cap on the well
Welded cap on the well

Brick stamped S.F.B. Co. Pueblo
Brick stamped S.F.B. Co. Pueblo

Pile of bricks and debris
Pile of bricks and debris

Golden bricks
Golden bricks

Pipes protruding from the ground
Pipes protruding from the ground

Broken and burned bricks
Broken and burned bricks

Clinker pile
Clinker pile

Cut out this end, stir well, made in U.S.A.
Cut out this end, stir well, made in U.S.A.

Below the dam and pond
Below the dam and pond

Silted-in pond
Silted-in pond


I noticed in the 1938 aerial imagery that what is now the Green River Cutoff Road went from what is now US-6 directly to this spot, but no further. The Green River Cutoff from the Castle Dale area at that time went down either Cottonwood Wash or Lost Spring Wash toward Green River. At some point after 1938 it was re-routed to connect with the road that was constructed just for drilling this well, and is still the route used today. I enjoyed learning this tidbit and others that I wouldn’t have otherwise known if it wasn’t for spotting the well in Google Earth.

Photo Gallery: Woodside Anticline

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