Rolling Stone or the Rock and Roll in Barrockal

Before the Megaconserto (an operation schedulled for next Saturday, 23), when we are going to try to re-erect the menhir of Barrocal, using only ropes, wood, and human energy, we are now preparing the event.
First, we had to roll the menhir upside down, and leave it in the proper position for erection.
Actually, the site has been excavated last Spring and we found the socket structures very well preserved; this situation is, unfortunately, very rare, and the menhir of Barrocal will be the first one of the big menhirs of the region, to be replaced with such a precision.