The Riss Skov adventure lab leads you on a walk through some of the nice views from Riis Skov (Riis' Forest), and some unique little sights you might otherwise miss.
During this adventure lab, you find two questions which have a year as their answer. Enter the sum of these years into certitude to get the bonus cache coordinates.
You can validate your puzzle solution with certitude.
Ovfba va n gerr, nebhaq 2z hc. Cyrnfr hafperj va cynpr naq qb abg gel gb erzbir gur ragver pnpur.