elastic deformation of the legs 26 this design ensures that the locking elements 21 and the bearing device 20 can interlock in a position shown in fig1 in which the central axis 24 is perpendicular to the respective base area 4 5 6 i e in which the web 25 rests in the corresponding base area 4 5 6 on the other hand the locking element 21 can be pivoted such that it disappears completely in the respective cavity 17 18 19 i e it does not project downwardly over the respective base area 4 5 6 snap in elements 33 having a snap in locking bead 34 projecting outwardly are formed on the web 25 of each locking element 21 the snap in locking elements 33 are separated from each other by recesses 35 so that they are elastically deformable towards the central axis 24 as seen in fig1 the locking apertures 15 each have a rear recess 36 that corresponds to the configuration of the snap in locking elements 33 with the snap in locking beads 34 so that the snap in locking elements 33 can snap engage elastically with the locking apertures 15 disengagement is possible without any difficulty by the respective snap in locking element 33 being detached from the locking aperture 15 fig1 illustrates the creation of a landscape from landscape units the assembly of only two landscape units 1 and 2 being shown in the case of the landscape unit 1 placed on an.