Remember to tune in to BBC Two at 9pm tonight for the latest episode in 'Britain's Ancient Capital: Secrets of Orkney'. Tonight the team will be tackling the Pentland Firth, investigating the power of Orkney's tides and uncovering more history at the fascinating Ness of Brodgar excavation. If you'd like to visit the islands, take a look at visitorkney.com for all the inspiration you need. | orkney.com

Orkney Archaeology: Uncovering Ancient Farmers' Secrets! | Odyssey - Ancient History

Deep under the earth of Orkney — at the Ness of Brodgar — radar picked up a strange, never-seen underground structure dating back to Neolithic times. This could be a lost chamber, temple — or something we can’t even imagine yet. What if this structure hides rituals, secrets or knowledge lost for thousands of years? What would you hope to find in a hidden chamber that predates recorded history? History might be buried — but some secrets dig themselves waiting to be found. #Neolithic #Archaeology

Neil Oliver and co are about to reveal some amazing secrets about the Orkney Islands. Britain’s Ancient Capital: Secrets of Orkney begins tonight (9pm on BBC Two) exploring the theory that Orkney was the cultural capital of the country. | BBC Scotland