The 15 million pound Lotto Super Saturday jackpot must be won this Saturday.

Or thousands of you will win a share of the prize.

But who will it be?

Maybe Raj, watching the racewalk and thinking I could do that.

Well speed walk down the shop and get yourself a ticket.

Lotto will you be next play in store or on app the national lottery account terms

rules and procedures apply players must be 18 or over. This material is so valuable that it's worth dying for and we want as much of it as we can get.

In this podcast we're going deep below ground into the belly of a mountainous sea serpent,

writhing and wriggling through dangerously claustrophobic tunnels,

encountering caverns of cathedral light dimensions, discovering the drive and

determination of our ancient ancestors as they dug the largest

prehistoric copper mine the whole world.

I'm Neil Oliver, and this is my the beginning of the Bronze Age, discovering one of the richest sources of tin in the ancient world.

Where are we now?

Well, today we're off to find the other metal

that the world needed if it was to make bronze.

That's the alloy that was powering the new age,

the bronze age. the Bronze Age.

We're in fluid in North Wales at the Great Orm

in search and copper. There's just no ways around it. That's what you need to make a bronze sword. You've got

your hands on copper and tin in a ratio of about nine times as much copper as you've got tin.

It's about nine to one. So we were talking last time about the mining for tin that was going on in Cornwall

...