One of the problems that students of Maltese archaeology have to face is the meaning of the numerous cart-tracks furrowing most of the barren rock-surfaces. These tracks are scarce on Gozo and non-existent on the islands of Comino and Filfola.
They consist of pairs of parallel grooves running for long distances on the hard coralline limestone patches, now straight and now curved as if avoiding an obstacle or having to change their direction. The grooves are mostly v-shaped, usually from 10 to 20 inches wide (25–50 cms) on the surface, and about 4 inches (10 cms) at the bottom. Between the two grooves, measured at the middle part, the distance is nearly always 4 feet 6 inches (1.37m). Naturally the depth of the grooves varies with the lie of the ground; if there is a strong tilt sideways, one of the grooves is shallow whilst the other is very deep.
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