Checking the Maeshowe website (Feb 2018) visitors are now asked to park at the new visitor centre at Stenness and a bus takes you to the site. Viewing is by guided tour only and advanced booking is strongly recommended. This is a Historic Scotland site and a charge applies for non- members. It is open all year round except for 25 / 26 December and 1 / 2 January.
Something is not right. This message is just to keep things from messing up down the road