Pray remember the grotto July 25 new style, and August 5 old style, is the day dedicated to St James the Greater; and the correct thing to do in days of yore was to stick a shell in your hat or coat, and pay a visit on that day to the shrine of St James of Compostella Shell grottoes with an image of the saint were erected for the behoof of those who could not afford such pilgrimage, and the keeper of it reminded the passer-by to remember it was St James's Day, and not to forget their offering to the saint
an underground passage, often decorated with crystals, bits of broken shells, and broken pieces of mirror, and involving running water in rills and pools; all of this is calculated to create a mysterious effect
A grotto is a small cave with interesting or attractively shaped rocks. Water trickles through an underground grotto. grottos grottoes a small attractive cave