The aim of Vormsi Nature Protection Area is to protect rare landscapes, heritage, culture and plants. The two internationally important bird protection areas on the coast of Vormsi – bays of Hullo and Sviby – and Hari strait with coastal meadows and islets are named research areas of the Royal Society for the Protection of Birds.
Interesting places: Hullo bay – a nesting and a stopping place for birds. In spring you can see thousands of scaups, long-tailed ducks, ducks, barnacle geese and woodcocks there. Rumpo peninsula is the habitat of the rare lichens characteristic for tundras, but rare in Estonia. Also take a look at Rälby bog, Dilby peninsula, Saxby beach and Prästviigi Lake.

The first part of the trail is a dirt road that runs along the high-voltage power line. The track then reaches the Marimetsa Brook and leads to the rest area along the banks of the brook. From there, a boardwalk will take you to Marimetsa Bog. There is a viewing tower at the end of the trail (7.6 metres high).
In Marimetsa Bog, you will see a fen, a transition bog, a raised bog, and a number of different birds and plants.
The length of the trail is 9 kilometres of which 2 × 2 kilometres is a boardwalk. You should plan 4–5 hours for the hike. The trail is wet at places – make sure to bring your rubber boots. 
There is a dry toilet on the track, benches for resting, and an information board with a map and a scheme of the trail.

One of the most fascinating places on Vormsi is the Huitbergi limestone hill in a spruce forest in the middle of the island. The hill is over 400 million years old and a coral reef polished by ice. The limestone outcrop is covered with moss, but fossils can be seen in places where there is no moss. Protected ferns have found their place there.
The circular trail is marked with wooden signs.