Little Diamond Trail - Fossils & Crystals & Killer Views

Quartz crystal points looking out over Diamond Fork Canyon area

Last weekend we had a fun family hike up Little Diamond Trail (Forest Service Trail 016) in Diamond Fork Canyon, Utah. I posted about our recent camping trips along Little Diamond Creek, and when I noticed on a map that there was a trail up the mountain that looms over where we camped, I knew it was going to have amazing views out over the whole Diamond Fork area. It did not disappoint!

Looking up at the (as far as I can tell) unnamed mountain from our camp site area

Getting There

From I-15 take the Price-Manti exit (highway 6) and follow hwy 6 for 11 miles until a left turn onto Diamond Fork Road (paved). In ~ 5 miles take a left onto the dirt Forest Service road 338 and stay right at the fork when it becomes road 038 which dead ends into the trail.


Road 038 becomes very rutted as it begins to climb up out of the Little Diamond Creek valley. Four wheel drive would be highly recommended, and even with four wheel drive after a while it got rough enough that we weren't comfortable taking our Subaru Outback farther. I later realized that we had actually driven up past where the road "ends" on the map, and had driven the beginning section of the "trail". The whole trail is in fact an old mine road and there was no signage noting a trailhead that we saw. A jeep or ATV could probably drive the entire trail.

The view looking down from the first switchback

The trail ascends the mountain in a series of switchbacks at a relatively gentle grade. The trail is mostly exposed with very little shade. On the plus side this means every time you turn around and look behind you there are gorgeous views over Diamond Fork Canyon to the south. It would be a brutal hike on a hot day though (we went on a cooler day as it is beginning to transition to fall here).


We noticed immediately that there was a lot of crystallization in the rocks, almost every chunk of limestone I picked up from the trail had pockets of quartz crystals.

I loved the look of this highly eroded chunk of limestone

At some point in the recent past a wildfire left the skeletons of what was once a grove of aspen to stand watch. I found the twisted blackened trunks to be very beautiful in a harsh way.


We came across a shale layer that was tilted nearly vertically in the uplift event that raised the mountains, and the trail crossed it several times on the way up.

Agatized fossil clam shells in thin shale slabs

This band of shale was deposited by the Cambrian sea ~ 500 million years ago and it was absolutely loaded with fossils of shells and other marine invertebrates.


Sheets of quartz crystal points formed in the cracks between layers of shale. The nicest crystals in terms of clarity and size that we found were in this shale.



The things were getting tired so we didn't make it to the top of the mountain, but we did make it to the top of a secondary peak which gave stunning views to the north as well as the views south over Diamond Fork. If we had continued, once the trail reaches the peak it continues on the other side along a flat ridge for a couple miles that looks like it would have amazing views down on both sides.

Looking down from the highest elevation we reached (~7300'), you can see several sections of the trail below

The trail continuing past where we stopped to the peak

I also uploaded a 360° pan video shot from the highest elevation we reached, click the link to view on 3speak.

Geology Sources

Comments 10

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28.09.2019 08:29

Iam a huge fan of Utah - thanx for sharing some new insights and spots.

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28.09.2019 08:31
Thanks for sharing your experience with us!
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28.09.2019 08:46

Impressive landscape and perfect weather! I've never been to that part of the world but I think I could like that as well :) Thanks for sharing

28.09.2019 09:22

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28.09.2019 12:47

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28.09.2019 18:41

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28.09.2019 21:42

Diamond fork is beautiful this time of year. I went up to the hotpots about 2 week's ago

29.09.2019 08:42

Diamond fork is beautiful this time of year. I went up to the hotpots about 2 week's ago. I really like the picture with all of the fossils of horn coral. First time I took my kids out looking for it was way out in Dell Utah just to find some like a month later up Rock Canyon.

29.09.2019 08:46

A beautiful landscape, and also hard and forbidding. How much wildfire has there been at this place?

05.10.2019 09:47