- Holes in Siberia
at the vast
frozen plains of Siberia are some of the most remote and inhospitable places on
earth but some of the most unusual are to crater like holes that were
discovered in the permafrost they’ve led to number of theories as to what could
have caused them are they the marks left behind by an alien spaceship perhaps
the result of a meteor that broke in half before it landed on the ground or
something else entirely on the deleted theories and perhaps more surprising
than anything else involves a little that we actually know about permafrost
regions like this it's long been known that the frozen ground contains large
amounts of gas and carbon deposits and when it thaws it releases it all into
the atmosphere could it be possible that after releasing what it contains large
enough gaps are formed that can cause the ground to sink in on itself
researchers are now starting to believe this is more likely and expect to see
phenomena like this forming far more frequently throughout the frozen regions
on earth.
- The Hole in Lake Berryless
Lake Berryless is one of the largest man-made
water deposits in California but in recent years something truly strange has
been happening with the appearance of a gigantic hole when you see images of it
happening it looks bizarre but the reason behind this is vital to the
protection of local communities the lake is held in place by a dam and provides
water to homes and businesses across the region it was built with a 72 foot
diameter pipe in it just in case the water levels rise too high and threaten
the integrity of the dam and in recent years that's exactly what happened when
you see the water at a lower level the glory hole as it's known looks like a
concrete structure in line with the rest
of the dam when the hole was built in 1957 officials only thought it would be
needed every 50 years or so but the change in climate in the past few years has
meant that much more rain is falling the normal that the hole has been needed
almost every year despite channeling 48,000 cubic feet of water per second it
doesn't create strong current tourism and so it isn't considered to be a danger
to boaters and other users of the lake that doesn't mean you should be
overconfident lyric however because in 1997 one swimmer was sucked into it and
her body was found downstream three hours later.
- lady boa reservoir
and lady boa reservoir is used by seven Trent
water company to collect and provide water to nearby communities in England and
Wales but with unpredictable rain patterns in the area and occasionally to
giant holes begin to suck huge volumes of liquid out of the facility to stop it
from overflowing known the shaft spillways they're located on opposite sides of
the reservoir and normally look like construction sites each one has a diameter
of 78 feet and lead to pipes that drop 66 feet down and join the River Derwent
the spectacular sight when water levels
rise and begin to pour into these holes has led to some venturing much closer
to them than would be recommended recent images showed two kayakers paddling
around them but things could have ended tragically the company responsible for
managing the dam says that you'd risk serious injury if you were to go into one
and even if you survived the ordeal you'd still need a rescue team to retrieve
you because the outlet into the river is covered by grates to prevent people
from climbing up them
Dean's Blue Hole
the Bahamas is known around the world for the beautiful beaches incredible sea life and wonderfully warm and clear water but there's an amazing structure just off the coast of Clarence town on Island a place called dean's blue hole blue holes are formed when a sinkhole opens up underwater and the entrance remains beneath the surface this one is one of the deepest that's ever been discovered and descends to around 663 feet and at the top it takes on a circular shape that's about 100 feet once you go 66 feet deep into it it opens up into a cavernous around 330 feet across the water here is incredibly clear and on a good day the visibility can be as far as 115 feet the stillness of the water means then it's a popular site for free divers and is where many of the free diving depth records have been set in the past decade since 2008 it has been the location of the annual vertical blue competition the Seas divers coming from all over the world and to see how far into the depths they can reach on one breath
depends in on the desert you're looking at sand dunes can be transient features that shift and move in whatever direction to prevail and wind is blowing such as the ones that can be found at Mount Baldy in the Indiana Dunes National Lake shore hide other secrets that for a long time no one had any idea where they're in 2013 a six year old boy was walking across the Jews when suddenly he vanished beneath the sand into a huge hole the rescue effort took three hours to retrieve him after he ended up more than 11 feet below the sand and sediment since then more holes like this have begun to appear and force authorities to close the park that's just 55 miles to the southeast of Chicago for a while they had no idea what was happening but after scanning the region with ground-penetrating radar they came across an answer old photos had shown the area to once be full of trees which had since been covered over by the sand as water seeped through the debris is decaying and leaving gaps and instabilities in the sand all it takes is slight pressure from above and the whole lot can collapse there's no fix to this problem because it's being caused by the unstable foundations of the Jews as a right now access to the region is strictly controlled
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