Read the material and fill in the summary of the text. Write one word in English in each gap.

Scientists have discovered the (3 p.) of the Altar Stone in Stonehenge. It is not very conceivable that it was carried there by moving ice. More
(3 p.), it was brought there by people. There are two options: either by (3 p.) or by sea. Researchers assume it is the
(3 p.) option that is correct. What makes this remarkable is the distance, and the (3 p.) of the stone. Scientists see this as evidence of sophisticated means of (3 p.) at the time.