Here’s what Parks Canada says about Greenwich…
“The site contains an extensive and fragile coastal dune system, wetlands and various natural habitats in which numerous rare plant species are found. Among the most spectacular natural characteristics to be protected at Greenwich are the unusually large and mobile parabolic dunes with their associated counter ridges or Gegenw’lle. This phenomenon is very rare in North America.
Greenwich is also noted for its cultural and historic richness. Research at the site is ongoing, and evidence found thus far indicates a landscape that has changed drastically over time. Several archaeological digs conducted between 1983 and 2002 by the Canadian Museum of Civilization and Parks Canada have found traces left by the major cultures that have existed on Prince Edward Island over the past 10,000 years. These include early Aboriginal peoples, the Mi’kmaq, French and Acadian settlers, and Scottish, Irish, and English immigrants.”
What Parks doesn’t say is the walk around the point at Greenwich is lovely. It increases the length of the trail to 8km. You cannot do this walk when the Piping Plovers are nesting in the summer.