333 Finland´s shield and the signature of president Urho Kekkonen 1967, when the ancient monument Hauensuoli was established as a protected ancient monument.
On the left a photo from 1967. This carving of modern times served as a testing ground for the biocleaning method. The next picture is of October 2022, when the lower half had been sprayed once with ethanol. The third picture is from 2023, when treatment of the upper half was begun, and the fourth from the spring of 2024, when the lower half was free of any growth.
The original carving in 1967 The same as photographed in autumn 2022.
Cleaning of the upper part started in 2023. The carving in the sujmmer of 2024.
The result on 10.5.2026.