Berlin, Germany.
30 natural marvels you’ve probably never heard of
Bracken Cave, Texas
29 of 30
It’s hard to imagine 20 million animals living huddled together in one cave little bigger than a football field. But that is exactly what can be found at Bracken Cave, near San Antonio, which contains the biggest bat colony in the world and the largest known concentration of mammals on the planet. At twilight, an immense river of bats – all 20 million of them – stream out of the cave in a column so thick that it shows up on air traffic control.
related stories on msn
0Comments
More on msn Travel
We talk to the adventurer about his new Australia show and whether it is just "a patch of Blighty on the other side of the world".
Whether you're heading there for the film festival or a weekend break, you'll be spoilt for choice.
Take a look at some of the furry and scaly contenders for the photo contest
In pictures: visit the island where planes fly ridiculously low
A new book captures some of our favourite memories and experiences of holidaying at home.
The experts at i-escape share their pick of the world's best art deco hotels
The experts at Lonely Planet chose the top things to do in Cannes.
Reading this may trigger a face-palm moment as the FCO releases its annual list.
Be prepared for a lot of pink...
Take a whiff of the 'corpse flower', which blooms once every seven to 10 years.
San Sebastian in Spain.
