On the eastern side of the shelter another large boulder seems to mark a sort of air of dwelling limit.
It is thickly covered with numerous linear signs etched more or less deeply, with differing degrees (straight, curved), arranged in multiple directions without any organization in the composition, both in groups and scattered.
Linear incisions are a recurring motif in European rock art, especially in the final Upper Palaeolithic. Their meaning is unknown.
According to some hypothesis, such signs may have a symbolic meaning or give numerical data.
When they are together with images of zoomorphic engravings could suggest a simulation of hunting injuries.
Theoretically we can not exclude the hypothesis that these linear incisions were associated with paintings that were lost and they could, therefore, have a meaning within a more complex image that is not preserved.