Clapham Junction cart ruts is one of the most mysterious objects in the entire Maltese Islands. Despite many attempts to explain the origin of rock ruts, it was not possible to confirm whether they are natural products or the effect of human activity. The discussion around cart ruts has been going on since the 17th century, but so far no solution has been found.
The paths have different widths and depths - from a few to 60 cm, and are spaced from 1.1 to 1.4 m. From above, they resemble a network of railway lines forming in many places isosceles and equilateral triangles. According to researchers, the strongly geometrized system rules out their natural formation. The establishment of cart ruts is dated to about 2 thousand. years BC
One hypothesis is that they are irrigation channels - according to another, they are ruts carved by heavy transport sleighs used in prehistoric times. The rationale is that during heavy rainfall, water soaked Maltese stone becomes brittle and susceptible to gouging.
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