Panel (1, 4, 5) comprising a panel top side and a panel underside and comprising at least four panel margins which are situated opposite one another in pairwise fashion, having complementary holding profiles which are provided in pairwise fashion on the panel margins and which fit together such that identical panels are fastenable to one another, wherein at least one of the holding profile pairs is equipped with hook profiles, specifically with a receiving hook on one panel margin and with an arresting hook on the opposite panel margin, wherein the receiving hook has a receiving edge directed towards the panel top side and a receiving groove open towards the panel top side, and the arresting hook is provided with an arresting edge which is directed towards the panel underside and with an arresting groove which is open towards the panel underside, wherein the receiving edge has an inner side which faces towards the receiving groove, and said inner side serves as lower locking surface, and in a manner adapted to this, the arresting edge has an inner side which faces towards the arresting groove, and said inner side serves as corresponding upper locking surface, with the condition that both the lower locking surface and the upper locking surface are each inclined relative to the perpendicular to the panel top side such that, in the locked state, said lower locking surface and upper locking surface are oriented parallel to one another and can make contact, wherein the inclination of the locking surfaces (12, 13) is selected such that the normal vector (N 12) with respect to the lower locking surface intersects the panel top side and the normal vector (N 13) with respect to the upper locking surface intersects the panel underside, wherein (i) a lower detent engagement point is provided which comprises a first detent means (15, 15a) which is arranged on an outer side of the receiving edge, and the lower detent engagement point comprises a second detent means (16, 16a) which corresponds to said first detent means and which is arranged on a recessed groove flank of the arresting groove, and (ii) an upper detent engagement point is provided which has a first detent means (21, 21a) on an outer side of the arresting edge, and a second detent means (22, 22a) corresponding to said first detent means is provided on a recessed groove flank of the receiving groove, wherein either the first detent means of the upper detent engagement point has a detent projection, and the second detent means of the upper detent engagement point has a detent depression adapted to said detent projection, or the first detent means of the upper detent engagement point has a detent depression 20, and the second detent means of the upper detent engagement point has a detent projection adapted to said detent depression; characterized in that at least a partial section of the top side of the receiving edge runs downwards in an inclined manner in the direction of the outer side of the receiving edge, wherein at least a partial section of the groove base of the arresting groove is adapted in complementary fashion to the inclination of the partial section of the top side of the receiving edge, and in that the first detent means is spaced apart from the inclined partial section of the top side of the receiving edge.