Kokkoila, a small village located 17 km southwest of Pryazha, on the road connecting Manghu and Kaskesnavolok. It is divided into two parts: Little Kokkoila is closer to Manghu, while Big Kokkoila is further down the road through the forest. In Big Kokkoila, along the road, there are old Karelian houses and new cottages. Opposite them, among tall spruces, stands a cozy chapel of St. Barbara from the 19th century, the exact date of its construction is unknown.

The chapel is built in the Karelian style with a small bell tower above the main volume and resembles a barn with a carved porch on the west wall. A tent-shaped bell tower rises on six pillars above the roof, and above it, a dome in the shape of a spruce cone.

The Karelians borrowed elements of Russian architecture but adapted them to their traditions and tastes. V.P. Orfinskiy notes that Karelian architectural ornamentation was particularly vivid in the 18th-19th centuries in southern Karelia, especially in the Pryazha region. The chapel of St. Barbara in Kokkoila is an example of this. Its elongated domes, resembling spruce cones, differ from traditional Russian cupolas, and the scales of the roof are made in the form of stylized little fir trees, emphasizing the uniqueness of Karelian architecture.

The chapel is visible from any point in Big Kokkoila: from the entrance from the side of Kaskesnavolok, from the windows of the old houses, and from the forest surrounding the village. Inside the chapel is an icon of St. Barbara, dated to the first quarter of the 18th century. The icon is made in a unique style that combines elements of the Peter the Great icon painting school. Barbara is depicted as a secular beauty with lush hair and a crown, dressed in a crimson-red cloak over a blue-blue chiton. Her appearance, with regular facial features and a regal posture, radiates nobility.

In 2005, the chapel was restored: the roofs, finishes, and porch were updated. It is now open for visits, and access to the bell tower is free.