098W0658 https://collections.naturalsciences.be/ssh-geology-archives-plone6/boreholes/descriptions/ocr-descriptions/098w/098w0658 https://collections.naturalsciences.be/ssh-geology-archives-plone6/@@site-logo/logo-rbins.jpg 098W0658 PL.AVELGEM 98W E.DELVAUX 677 = 658 (IV) Même observation. Fouille de recherche de 0.60m.