“… The world-wide admitted finding area Lierbachtal consists of approximately 30 places of discovery around the Hauskopf and the Eckenfelsen in Oppenau… in the Lierbachtal all places of discovery are in private property. The owner of the forests are suspicious of agate-collectors, because some of them inconsiderately left field damage, because they did not fill the excavations again …”

written by Patricia Hemmer, in “thundereggs from the Black Forest” - catalog to the international agate-fair 2012