Fact of the Day
Stonehenge
Stonehenge is made of bluestones and sarsen stones. Bluestone is igneous rock of diabase, rhyolite, and volcanic ash. Sarsen stone is a type of sandstone found on the chalk downs of Wiltshire, southern England, the remnants of a once much larger deposit from the Tertiary period.
Stonehenge is made of bluestones and sarsen stones. Bluestone is igneous rock of diabase, rhyolite, and volcanic ash. Sarsen stone is a type of sandstone found on the chalk downs of Wiltshire, southern England, the remnants of a once much larger deposit from the Tertiary period.
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