The site contains a spring known as the 'healing fountain' which remains frost-free during winter months due to its specific geological conditions.
The hillfort's defensive structures include an unusually deep moat system that separates the main mound from the adjacent upland.
Archaeological surveys have uncovered remains of a wooden fortification wall and ancient fire pits dating to the early iron age.
The area is classified as an object of cultural heritage and is protected by the Lithuanian Department of Cultural Heritage.
The site features a series of rocks known as 'stone chairs' which are frequently attributed to prehistoric altar sites, though their exact origin remains a subject of archaeological debate.
Lopaičių piliakalnis is a significant archaeological site in the Rietavas municipality featuring a 1st-millennium hillfort and a surrounding complex of ancient mythological objects. The site includes a defended mound with a flat plateau, protected by a system of moats and earthen ramparts. Recent excavations have identified cultural layers dating back to the 1st century AD. Beyond the fortification, the site encompasses a legendary 'sacred spring' with purportedly healing water and a series of large, naturally shaped stones that locals associate with pagan rituals. Visitors navigate the area via a maintained wooden boardwalk trail that connects the hillfort to the spring and the stone formations. The topography is characterized by steep slopes and proximity to the Akmena River basin. Archaeological evidence suggests this location functioned as a spiritual and social center for local Curonian and Samogitian tribes. The landscape is heavily forested, creating a distinct separation from the surrounding agricultural fields.
The wooden footbridge leading towards the spring provides the most comprehensive view of the surrounding forested valley.
Wear sturdy, waterproof hiking boots as the trails through the forest and around the spring are often damp and muddy.
Bring a reusable bottle if you intend to collect water from the spring, as many visitors believe in its therapeutic properties.
Carry insect repellent, as the humid, forested environment near the Akmena River supports high mosquito and tick activity during summer.
Do not attempt to traverse the steep slopes of the hillfort outside of the marked wooden staircases, as the terrain is prone to erosion.
Respect the sanctity of the site; avoid climbing on fragile stone formations and do not leave behind ritual offerings like coins or fabric ties.