We asked you to name an ancient monument in our Geo Quiz today. It's located north of Dublin, Ireland.

The answer is the Newgrange Tomb. The World's David Leveille has the details.

Long before the Newgrange Tomb became one of Ireland's top tourist attractions, it was a grass roofed burial site built out of huge stones and earth. The passage tomb as its called is 500 years older even than the Great Pyramid of Giza. And like the ancient pyramid, this tomb holds some secrets of the past:

"I was in the chamber this morning."

Claire Tuffy manages the Brú na Bóinne Visitor Centre that oversees the site:

"It's called a passage tomb because there's a long narrow passage going into a central chamber and above the doorway there's a little opening rather like a window and 5000 years ago, the builders of the monument designed it ago so the window catches the rays of the rising sun at dawn at the winter solstice and at no other time of the year."

The ancient builders designed the tomb to function as a solstice clock. In recent years, people have flocked to see it in action. More than 28,000 people from around the world applied this year to get on the guest list. Problem is only 50 people can squeeze into the inner chamber at a time to witness the spectacle.

"So we thought that because there was such interest in the event why not use modern technology at the ancient monument and go global! So that's what were doing tomorrow morning and we're getting the best of both worlds."

The Newgrange solstice event will be streamed in a live webcast beginning at 8:30 a.m. unlike other webcasts, Tuffy says this one isn't entirely focused on earthly images:

"Some people suggest that when the light shines into the chamber, that because it's a burial place, that perhaps the spirits of the dead or the belief was 5,000 years ago, that the beam of light would carry the spirits away from the chamber to be reborn."

Among those planning to witness the online Solstice event is musician and folklorist Áine Minogue:

"I think its magical the idea of our ancestors speaking to us a thousand years before Stonehenge was built I think its just stunning that you can actually see it online and share in."

Minogue calls Newgrange a sacred place that partly inspired the music on her album Between the Worlds. She says she tried to capture the feeling of standing in that inner chamber when the sunlight streams in, when the ancients contemplated the divine, a moment she describes as a "crack" in time:

"It's the idea that the veil between worlds is very thin during these cracks in time ...because these Celts had several other worlds that they believed in, a land of eternal youth, a magical world under the ocean and one also one beneath the ground."

Any talk of a land of eternal youth or a magical undersea world sounds like fantasy to most modern ears. But not so long ago, the idea of a virtual world or the Internet, didn't even exist. Now all of these worlds will converge. If the skies are clear, and the sunlight streams into the ancient Newgrange tomb tomorrow, millions are expected to see that image streamed online. Hopefully the ancients approve.

For The World, I'm David Leveille.