29:41

Friends build real castle from scratch with simple tools only

5:17

'In Stone We Trust': builders learn the art of dry stonewalling

30:56

Build stone arch bridges with ancient technology

7:59

Yorkshire Crafts: Meet the drystone wallers

10:55

Time lapse of dry stone bridge construction

28:27

The workers built beautiful, durable stone bridges

14:29

Reconstructing the steps to the old ruins

3:57

Forces in an Arch