igneous rocks around us HERMITAGE MUSEUM IN SAINT PETERSBURG RUSSIA The school bus pulls up to a huge museum Its front is covered in sculptures carved from a hard rock called granite What will you find inside the museum
ANCIENT TOOL DISPLAY OBSIDIAN KNIFE In one room you discover displays that contain more granite carvings of rocks animals and other subjects Another room is full of ancient tools made from obsidian and other rocks Igneous rocks such as granite and obsidian are all around us
