Inscription of the stone, which is located directly on the Rothaarsteig and Brilon Kammweg:
"In memory of the happy landing of the free balloon Tropi Dortmund; in dense driving snow Christmas 1968; start in Münster/Westfalen.
The balloon pilots Wrocklade Dr. Mayer Hasse and Feldmann thank Chief Forester Schmitz and the citizens of Petersborn for their help in recovering the free balloon.
Sporting ideas build bridges".