This proved highly dangerous to pilgrims who approached the abbey across the sands (the causeway joining the island to the mainland was not built until 1874).
The roads leading to abbeys used by pilgrims are hard to access.
mnli hypothesis: The roads leading to abbeys used by pilgrims are hard to access. premise: This proved highly dangerous to pilgrims who approached the abbey across the sands (the causeway joining the island to the mainland was not built until 1874).