The Lourdes Grotto was built in 1903. Rohrener carters brought about 100 loads of rubble stones while hard-working helpers from Widdau brought 50 loads of sand from the Rur.
The Olberg Grotto was built by Pastor Hesseler in 1904. The plans were drawn up by Father Rademanns of Steyl. Wagoners from Widdau and Rohren brought approximately 80 loads of …