0:00:04 > 0:00:08'On Deadly 60 I've had loads of incredible animal encounters.
0:00:08 > 0:00:11'Here's just one of my many favourites.
0:00:12 > 0:00:16'This is Deadly 60...Bites!
0:00:16 > 0:00:19'This is Gomantong Cave in Borneo,
0:00:19 > 0:00:21'with some totally vast caverns.'
0:00:23 > 0:00:24Wow!
0:00:25 > 0:00:27What a place!
0:00:31 > 0:00:34The air is just thick with swifts.
0:00:37 > 0:00:40This has to be one of the most beautiful places I've ever seen.
0:00:42 > 0:00:44Up in the roof of the cave
0:00:44 > 0:00:47with the bats and the birds circling around you,
0:00:47 > 0:00:49it's kind of like paradise.
0:00:49 > 0:00:55But all those birds and two million bats create an awful lot of poo.
0:00:55 > 0:00:57And that falls down here, on the cave floor.
0:00:57 > 0:01:02So, if up there's heaven, then down is a kind of hell.
0:01:02 > 0:01:06But there are some deadly creatures that absolutely love it.
0:01:09 > 0:01:13It smells incredibly strong. And in fact anyone that
0:01:13 > 0:01:16works in this cave for too long has to wear protective clothing,
0:01:16 > 0:01:20which explains why my crew
0:01:20 > 0:01:23are all dressed like weird Oompa-loompas.
0:01:23 > 0:01:26'The crew have been working down here much longer than me.
0:01:26 > 0:01:29'That's why they're wearing the suits and I'm not.'
0:01:29 > 0:01:31And this big hill
0:01:31 > 0:01:34that I'm walking up here isn't actually a hill at all.
0:01:34 > 0:01:38See, all those creatures up there
0:01:38 > 0:01:41obviously have to go to the toilet sometime.
0:01:41 > 0:01:46And over hundreds of years, it's built up into this gigantic
0:01:46 > 0:01:49pile of what's called guano.
0:01:49 > 0:01:51'Yup, if you haven't already guessed it,
0:01:51 > 0:01:56'I'm standing on the world's largest pile of poo.
0:01:56 > 0:01:58'And it stinks!'
0:01:58 > 0:02:00If you look over the other side,
0:02:00 > 0:02:03you can see the ground seems to be moving.
0:02:03 > 0:02:07It's almost like there's thousands of little jewels.
0:02:07 > 0:02:09The reason the floor appears to be moving
0:02:09 > 0:02:14is that it's absolutely covered with cockroaches.
0:02:16 > 0:02:22I have never seen anything so disgusting in my entire life.
0:02:26 > 0:02:31Every single square inch of ground is covered in these creatures.
0:02:35 > 0:02:40Now cockroaches are absolutely amazing animals.
0:02:40 > 0:02:45They are some of the world's greatest survivors.
0:02:45 > 0:02:50Cockroaches, it's said, can live for over a week without their heads.
0:02:50 > 0:02:54They really are some of the greatest developed insects in the world.
0:02:54 > 0:02:58But at the same time they're also absolutely hideous.
0:03:01 > 0:03:03Here in this cave
0:03:03 > 0:03:07all of this wonderful dung is perfect food for them.
0:03:07 > 0:03:09And something else here
0:03:09 > 0:03:11is even better food for cockroaches.
0:03:11 > 0:03:14Occasionally some of the bats and birds don't make it.
0:03:14 > 0:03:19And they fall down to the cave floor and become food for the cockroaches.
0:03:19 > 0:03:24These here are actually flesh-eating bugs.
0:03:29 > 0:03:34This possibly is one of the nastiest places on the planet.
0:03:34 > 0:03:36But there's another creature here
0:03:36 > 0:03:40which actually eats these cockroaches for breakfast.
0:03:40 > 0:03:42And it's them that we're here to find.
0:03:43 > 0:03:45'But to find this cockroach killer,
0:03:45 > 0:03:49'I'm going to have to descend even further into the darkness
0:03:49 > 0:03:50'of the cave system below.
0:03:50 > 0:03:55'This place is definitely not for the faint-hearted.
0:03:59 > 0:04:03'And it looks like my next critter has already had its breakfast.'
0:04:07 > 0:04:09Of all of the horrors that live
0:04:09 > 0:04:12in this absolutely nightmarish place,
0:04:12 > 0:04:16down here is perhaps the most frightening.
0:04:16 > 0:04:19And it's the animal that I'm suggesting for the Deadly 60.
0:04:24 > 0:04:27Oh, crumbs! I have to say I absolutely hate them.
0:04:27 > 0:04:29There you go. Ah! Ha! Ha!
0:04:29 > 0:04:32That one just ran over my hand.
0:04:32 > 0:04:36- OK, right. I'm going to be more gutsy this time.- Careful.
0:04:36 > 0:04:38There's one other side of that rock.
0:04:41 > 0:04:44This is scutigera or the long-legged centipede.
0:04:44 > 0:04:47I think there's another one on the other side of the rock as well,
0:04:47 > 0:04:51so I'm being very careful about how I handle this.
0:04:51 > 0:04:54It is quite venomous.
0:04:54 > 0:04:56One of the guys living in the area was bitten
0:04:56 > 0:04:59by one of these centipedes not so long ago
0:04:59 > 0:05:01and spent a week in hospital
0:05:01 > 0:05:03so I'm taking care not to get bitten.
0:05:03 > 0:05:06They actually have like most centipedes...
0:05:06 > 0:05:08Ah! It just ran over my arm.
0:05:12 > 0:05:16Sounds obvious, but one of the main challenges of living in a cave,
0:05:16 > 0:05:20is the dark and the fact that you can't actually see anything.
0:05:20 > 0:05:25Scutigera still manages to be an incredible hunter
0:05:25 > 0:05:29by using its long legs. Ah!
0:05:32 > 0:05:35You can see as it moves, it'll just stop
0:05:35 > 0:05:38and tap some of those legs over the rock's surface.
0:05:40 > 0:05:44What it's doing is using each and every one of those feet
0:05:44 > 0:05:48to feel everything about the surface it's moving on.
0:05:48 > 0:05:51Building up a real mental picture of its environment,
0:05:51 > 0:05:54and if there's anything there that it might be able to eat.
0:06:04 > 0:06:09'It can grow as long as my forearm, has a mightily venomous bite,
0:06:09 > 0:06:12'and with those long legs, there's nothing down here
0:06:12 > 0:06:14'that can escape it.'
0:06:18 > 0:06:22And nothing that's more guaranteed to give you nightmares.
0:06:22 > 0:06:26So scutigera is going on the Deadly 60.
0:06:26 > 0:06:29And I'm going somewhere else.
0:06:35 > 0:06:39A truly terrifying cave predator.
0:06:39 > 0:06:43Venomous, creepily quick and one of the most frightening creatures
0:06:43 > 0:06:46I've seen on the Deadly 60.
0:06:59 > 0:07:02Subtitles by Red Bee Media Ltd
0:07:02 > 0:07:05E-mail subtitling@bbc.co.uk