Most Mysteries

Mysterious

when it comes to life on earth and human

history

scientists and historians have some of

the answers

but not all of them they're great at

their job and they can reach grand

conclusions based on tiny clues and

pieces of evidence

but sometimes they encounter something

that leaves them totally stumped

that's what today's video is all about

these are these strange and wonderful

places all over the world

that are amazing to see but impossible

to understand

even for scientists

why have one tree when you can have two

that seems to be the theory in casourso

italy

where there's a remarkable sight to

behold in a field

it's two trees in one and they're

completely different species of tree

the bottom one is a mulberry tree but it

has a cherry tree growing on top of it

it's a sort of hybrid duplex of the kind

that very rarely occurs in nature

while smaller trees do occasionally grow

on top of larger ones

it's very unusual to see two fully grown

trees

cohabiting and thriving like this

usually one of the trees good health

will come at the expense of the other

and it's usually the tree on top that

suffers

as the beautiful white flowers on the

cherry tree demonstrate

that isn't the case here unsurprisingly

the strange tree has become a tourist

attraction for the area although it's

had to be fenced off for its own

protection

so that people don't get too close

climbing it is illegal

[Music]

mystery surrounds the origins of the

he'd enter in austria

it's believed to have been built during

the reign of the roman emperor

constantius ii

who ruled between the years of 351 and

361

but that's little more than a best guess

the ancient romans

sometimes built structures like this to

mark the site of significant military

victories

that would make a degree of sense

because the ancient city of carnentem

once existed in this spot and played

host to around 50

000 people surrounded by a walled

fortress

the settlement is long gone but the one

remaining arch of this building remains

for several centuries it was

misunderstood as the gateway to the old

city

as so little of its true history is

known plenty of myths and legends have

grown up around the heidenter

it's become a popular gathering spot for

pagans

who refer to it as heaven's gate for

reasons unknown

if it really was a roman tetrapylon it

would probably

have a statue of either an emperor or a

god in the middle of it

but there's no sign of it today

there's a clue in the name of

inventonate island in kenya that tells

you a lot about how the kenyans feel

about it

the name of the strange-looking island

which is on lake turkana

translates as no return that ties in

with the myths and legends that surround

the place

which suggests that nobody who enters it

will ever return

in 1935 english explorer vivian fusch

decided to test that theory by visiting

it with colleagues bill dason and martin

shelfields

on a research mission but when they

failed to return

it only served to reinforce the legends

while some conspiracy theorists claim

that the island contains an

alien base full of extraterrestrial

beings who will abduct anybody who gets

too close

the kenyan belief is that those who

descend into the enormous crater at the

island's center

will be struck by lightning and

obliterated photographs taken by planes

that have flown over the crater

show what appear to be the remains of

ancient huts at its center

but nobody's been brave enough to go and

inspect it with their own eyes for a

very long time

perhaps that's for the best

there are many ancient and wonderful

temples in syria

most of which have their own fascinating

story to tell

but the fascination with the temple of

andara is especially strong

that's mostly because of the huge human

foot imprints that appear at the

entrance to the temple

they've been there for at least as long

as the temple has which

is at least 3 300 years and there's

disagreement about how they got there

scientists and archaeologists say that

they were carved by the same people who

built the temple

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