The Y and Z holes are the last known additions to this site after the three main phases of its construction. Legends about the Devil striking a Friar’s heel originated the name of a single sarsen at this site’s entrance. Wooden sleighs greased with animal fat were central to an experiment to explain this site, which is grouped with a similar one made from timber. (10[1])The avenue connecting this site to the river Avon (10[2])is aligned towards sunrise during the summer solstice. (10[1])Horizontal (10[1])lintels (10[1])form the outer section of this site, which is located on the Salisbury Plain in Wiltshire. For 10 points, name this prehistoric site in England featuring a circular arrangement of big rocks. ■END■