Terrifying moment a Silverback gorilla charges at tourists in Rwanda

This dramatic footage shows the terrifying moment a Silverback gorilla charged at a group of tourists sending them crashing to the ground and falling like skittles.
The video shows the tourist group following a gorilla family on the slopes of the Volcanoes National Park in northwestern Rwanda.
As the group followed on one of the creatures, another mountain gorilla came careering towards them.
Petrified, the tourists fell to the floor while their quick-thinking guide quickly grabbed one of their party and tackled them to the ground.
Lying on the ground, the guide managed to pacify the gorilla by shaking his hand to avert a disaster.