What unique geological treasure can visitors dig up at Oklahoma's Great Salt Plains State Park?
Tap your pick
The Great Salt Plains in northern Oklahoma are the only place in the world where you can find selenite crystals with a distinct hourglass shape inside them. These delicate, clear crystals are formed by salt and clay minerals dissolved in the underground water, and visitors are allowed to dig for them to keep. Photo: Shujianyang, Wikimedia Commons, CC0.
Read more on Wikipedia
Source: Wikipedia (CC BY-SA)
Not the question you came for?
Ask your own!
In your own words. No account, 20 seconds.
Photo Duos, quizzes and more? That's in the free app.
That didn't work. Check the fields and try again.
Your Duo is live! 🎉
Your link is how votes come in: share it with everyone who should weigh in.
Would your friends get this right?
Send it to your group chat — see who knows.
</>Embed on your site
Put this Duo on your own site
Paste the code into your page. The player fits itself in, and every vote counts in Votur.
On WordPress, Ghost or Squarespace? Just paste the link of this page into your post.
This is how it looks
More like this
- How long is the memory of a goldfish?
- How much of our brain do we use?
- Can the Great Wall of China be seen with the naked eye from space?
- Can a coin dropped from a skyscraper kill someone?
- Are bats blind?
- Do diamonds originate from coal?
- Which fabric is made from the flax plant?
- Which substance gives skin its brown color when tanning?
- Which hardwood is actually the softest in the world?
- Which animal can jump the highest relative to its body size?
- Why do cats see well in the dark?
- Which planet is closest to the sun?
- Which river is often considered the longest in the world?
- Who developed the theory of relativity?
Come join us on Votur!
Voting is fun! But the real fun begins when you start asking and sharing.
Vote on taste Duos, play quick quizzes, or make your own — private for friends or public for the world. From now on, you'll always have something to talk about!
Vote on 4,211+ questions like this in the free Votur app →
