Hill with falling rocks

The model is made to fit around two curved pieces of Brio compatible railway.The rocks falls down when the leverer on the back of the model is pulled. The model of the hill can be printed with an infill of 4%-5% in order to save filament, however it is recommended to print the rocks with at least 10% infill to make them heavier and a bit more steady. AssemblyPut the larger leverer in from the top of the hill. The longer lever goes on the top of the hill, the shorter below.Add some glue to the connector piece of the lever.Push it in to the slot, to lock it together with the larger pice.Be careful with the glue, so the leverer does not glue itself to the hill.