Phytoremediation is a process of certain special plants called hyperaccumulators which are able to clean up or lower the level to an acceptable amount of heavy metal in contaminated soil, groundwater, surface waters, industrial wastewater or air. During rhizofiltration (soil remedy technology), roots of plants absorb, collect or adsorb the heavy metals from the contaminated groundwater. The alluvions, pebbles, residuals and waste in the Danube are symbolized by the amorphosly shaped paper siluettes of pebble, the “byproduct” of planting and germination of hyperaccumulator plants. The cyanotype, the sewing and the thread symbolizes the roots, the perpetuation and the absorbing power of the plants for me. The shapes and patterns of the DNS of the gene HMA4 – which is partly responsible for the absorbation of heavy metals in a number of hyperaccumulator plants – mysteriously weaves the whole mareial. Floating the object over the water surface is a symbolic gesture in order to clean the Danube.