Project

Constant water exposure, from falling rain and rising groundwater, has accelerated the breakdown of the stone. Mosses and lichens cause small cracks in the statues, and a birch tree has sprung up from a larger split in the torso of John the Baptist. In 2000, researchers documented the sculptures to provide a comprehensive record that would help in subsequent restoration. (...)

Constant water exposure, from falling rain and rising groundwater, has accelerated the breakdown of the stone. Mosses and lichens cause small cracks in the statues, and a birch tree has sprung up from a larger split in the torso of John the Baptist. In 2000, researchers documented the sculptures to provide a comprehensive record that would help in subsequent restoration. Monitored by WMF, the team surveyed the landscape and outdated drainage system, hoping to find a solution to the rampant water damage. They calculated the porosity, strength, and chemical make-up of the carved sandstone boulders and examined the biological organisms growing on them. The final step was creating a long-term conservation plan that would address the issues raised by their research. The researchers proposed repairing and adjusting the old drainage system to improve its effectiveness, installing pump boxes where necessary to steer groundwater away from the sculpture. Brush was removed to enhance ventilation in the woods. The drainage system and landscaping changes were completed in 2003. Caretakers of the site are continuing to observe the condition of the statues and consider advancements in preservation.