Percolation block element comprising a base wall having a square base area with which a plurality of hollow columns is connected, where the columns are configured and arranged such that, with two identical percolation block elements that are aligned in the same direction, the columns , so called first columns , of the first percolation block element can be introduced into the columns , so called second columns , of the second percolation block element , and a stack of the two identical percolation block elements that are aligned in the same direction can be formed, and where the base wall comprises column tip receptacles which are adapted to receive column tips , where the percolation block element has an axial symmetry of 180° when rotated about an axis of rotational symmetry (A1) which extends perpendicular to the base area of the base wall , where the column tip receptacles and the columns are further configured and arranged such that, with two identical percolation block elements arranged rotated by 90° relative to a rotational axis (A) being perpendicular to the base area of the base wall , the column tips of the first percolation block element can be introduced into the column tip receptacles of the second percolation block element , and an operating distance (D1) can be formed between a first underside of a first base wall and an upper side of a second base wall, where the columns and the column tip receptacles are arranged such that they are each arranged in mirror symmetry with respect to both centre lines (M1, M2) of the base wall and are each not in mirror symmetry with respect to both 45° diagonals (DI1, DI2) of the base wall , characterised in that when mirroring at the two 45° diagonals (DI1, DI2) of the base wall , a column tip receptacle comes to rest at a position of a column and a column at the position of a column tip receptacle , the line profile of the wall of a first column of the first base wall being viewed along a vertical plane, when the operating distance (D1) between the first underside of the first base wall and the upper side of the second base wall is established, starting out from a first position at which the first column and a first column tip receptacle of the first base wall directly adjoin, to the upper side of the second base wall , where the first column tip of the first column is introduced into a second column tip receptacle of the second base wall and from there transitioning to the line profile of the wall of a second column of the second base wall , starting out from a second location, at which the second column and the second column tip receptacle of the first base wall directly adjoin, then the line profile of the wall of the first column and the wall of the second column merge into each other, where the line profile is approximately in flush alignment, and that with the two identical percolation block elements each arranged rotated by 90° relative to one another about the rotational axis (A), a symmetric application of load is enabled as the force is evenly transferred by a column of the first percolation block element to two columns of the second percolation block element as the column tip receptacle for the column of the first percolation block element is disposed on the upper side of the base wall of the second percolation block element in a region between two columns of the second percolation block element . <EOS>