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Greenpath is an exuberant green cavern, composed of diverse vegetation, mossy valleys, and broad lakes of acid. These features are deeply reflected in its inhabitants, who developed a natural mossy camouflage, allowing them to perfectly blend in with their surroundings.
Throughout all of Greenpath, pillars and egg-shaped stones with swirling carvings, sometimes reaching enormous sizes, can frequently be spotted.
In the northwest part of Greenpath, to the left of the arena where Hornet is fought, the Lake of Unn can be found with a lone Moss Knight standing on the edge of the pier next to the shrine. Further west, on the other side of the lake, Unn can be encountered at the bottom of the lake.
In the southwest sector of the area, at the end of a challenging path full of thorns and Durandas, is Sheo's Hut, where the Knight can learn the Great SlashNail Art.
In the very southeastern portion of the area, near the connection to Fog Canyon, the Stone Sanctuary can be found at the end of a dark passage below the Bench room. In the section above, lies the Hunter in his lair set up in a small cave.
Greenpath is inhabited by the Mosskin Tribe, a group of plant-like bugs. They allowed the Pale King to build roads throughout their lush caves, but anyone straying from the paths would face the law of Unn.
The most glaring displays of their skills of carving and construction are the Lore Tablets scattered across Greenpath and the temple built to worship their god, Unn, which is located on the shores of the Lake of Unn, where the Higher Being lives.
Unn is said to have created all of the area's flora and the Mosskin themselves from her dreams. She is calling the mosskin, who are waiting for the call to return.
The region now known as Greenpath used to be much more extensive, stretching over the Queen's Gardens and possibly Fog Canyon. 
An acidic lake located at the northwest part of Greenpath that can be accessed after defeating Hornet. At the edge of the lake is a small structure with a stone statue of what appears to be Unn and a Bench inside. The Shape of UnnCharm can be obtained in a hidden area to the west of the lake, given by Unn herself. Crossing the lake becomes possible once Isma's Tear has been acquired.