@ourbackyarduniverse: Were there really ancient civilizations underground? Were there ancient races of giants in North America? Evidence found in mammoth cave seems to point in that direction. Follow to not miss the next episode on the giant lore around this national park! #lostcivilizations #ancienthistory #nativeamericanhistory #mammothcave #appalachia

Our Backyard Universe
Our Backyard Universe
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Thursday 21 May 2026 22:17:08 GMT
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discodenim1
discodenim1 :
Mammoth cave. Fascinating.
2026-06-05 17:59:16
2
dunnd2003
Denny :
I've been through Mammoth Cave a few times, Crystal Onyx and others. I found Short Crk (Cave) in Pulaski County. It's super cool, worlds shortest cave Genesis Book of World Records.. Coldest water I've ever felt, and it's so dark way back inside. It's creepy in one spot, I almost took off running, I was alone but freaked out with nothing but a phone light
2026-05-24 01:11:32
7
solomondaviddennis27
Solomon David Dennis :
Thank you finally somebody admitting that the subterranean continental shelf has intelligent life even more advanced than what’s on the surface
2026-05-22 22:48:11
39
carolyn.kentuckywoman
Carolyn.. Kentucky woman :
I cannot send or receive messages right now. Tik Tok is not happy with some things that I have posted. What happened to freedom of speech?
2026-06-12 01:41:55
2
suezuki828
Sue ❌ :
I've lived close to Crystal Onyx for over 5 years, I kayak through Mammoth Cave on the Green River every summer. Definitely experienced some very strange things, but nothing bad, It's really peaceful here 😊
2026-06-09 14:24:25
6
missy.lynn55
Shy butterfly 🦋 Gen ❌71 :
It’s magical as beautiful historical mammoth cave is
2026-05-23 18:08:48
1
kaleigha0817
kaleigha0817 :
2026-06-14 17:16:04
3
rivershadow369
TheRiversShadow❌ :
place of re'emergence!
2026-05-29 23:40:41
1
truthseekerseeking
TRUTH SEEKER :
it's a entrance to exit
2026-05-31 19:00:11
1
crazy_dispatcher
user5443020123242 :
I really enjoyed this, can’t wait the next episode!
2026-05-22 00:51:35
0
coryswann777
CorySwann777 :
It goes to inner earth
2026-05-26 23:14:51
1
abbie_coughman
amERICan Feral :
Very interesting, although I don’t believe in giants or spirits, but still cool.
2026-06-06 00:40:18
1
mariemeg007
DADAR :
told ya
2026-06-02 21:52:03
0
samuelthomasjohns
samuelthomasjohns :
Astounding, if factual.
2026-05-30 15:23:09
1
albertpottero
Albert Potter :
has really cool
2026-05-22 05:15:48
0
d.j..hickman6
D.j. Hickman :
Yesss yess yes
2026-05-29 01:02:58
0
carolyn.kentuckywoman
Carolyn.. Kentucky woman :
I am proud to be from Kentucky.
2026-06-12 01:39:44
5
caver775
caver775 :
The 2 bodies found very deep in the cave were both accidental deaths. Most other burials are close the the entrance or in large easy passageway. She did have red hair at discovery but that is what happens to black hair left in that environment for so long and her remains are currently in the Smithsonian, she was also not found in mammoth cave.
2026-05-22 22:25:26
3
user23836796161678
Voomed :
What about oxygen?… Canary in the coal mine ? How do they breathe down there?😳😏👀
2026-05-22 14:55:06
0
jcstayready
JCstayready :
That’s supposedly the real place they found King Tut !! There was even pics in the newspaper with the same guy who later “discovered” King Tut in Egypt but after and the artifacts look cleaned and categorized in the Egypt pics looks fresh in the Kentucky pics
2026-06-10 18:55:20
0
breezepqrapqrs
CMXIX :
Some of the most ancient human remains have been discovered miles deep in caves. They carried their dead beyond points that make sense to modern humans
2026-06-11 23:22:01
0
jadedescapades
Jadedescapades :
The cave is magnificent!!! Please help us protect it and keep the data center from being built right on top of it in cave city!!! Please us locals aren't enough!!!
2026-06-16 17:14:46
0
brycehayden93
dffx :
the first newspaper article said 4ft 5 in in height 🤣🤣🤣😂
2026-06-10 07:31:03
0
persephone362
Persephone :
this is AI slop
2026-05-22 21:01:35
1
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