Glass from Volcanoes – Not Dragons
The volcanic glass obsidian has a rock solid place as a valuable resource in human history. It also has a solid place in fiction, as the Game of Thrones material of Dragonglass found on Westeros [...]
The volcanic glass obsidian has a rock solid place as a valuable resource in human history. It also has a solid place in fiction, as the Game of Thrones material of Dragonglass found on Westeros [...]