RBR.Music on Instagram: "Archaeologist demonstrates an ancient Lithophone. The lithophone is one of the earliest known musical instruments, a fascinating link between humanity and sound. Essentially, it’s a collection of stones sometimes a single rock, other times carefully arranged sets of stones crafted to produce musical tones when struck. These stones could be granite, basalt, marble, fossilized coral, petrified wood, or other naturally resonant minerals. Each stone has its own pitch, and to

Caesar’s Double Siege: Starving Alesia The Battle of Alesia is perhaps the greatest military engineering feat in history. Facing a massive enemy force inside a city and an even larger relief army approaching from the rear, Julius Caesar did the unthinkable: he built two walls and fought two armies at the same time. This video covers: The Trap: Vercingetorix's retreat to Alesia. The Donut Fortification: Caesar's construction of the circumvallation and contravallation lines. Ancient Minefields: Th