In 1875, a spa doctor Bernhard Pauer makes reference just to Jachymovy boudy on the eastern slope of Svetla hora, today known as Reissovy Domky. Shortly after, Franz Braun from Cerna hora built a mountain restaurant near the quartzite rocks, called Harfa and Modre kameny. A coin-operated entertainment console attracted visitors desiring to dance from far and wide surroundings, even during the period of the innkeeper Vilem Lauer. The restaurant reached prosperity thanks to Alfred Jeschke, a grandchild of Wenzel Stark, a mayor of Janske Lazne and an owner of a few hotels. He bought it at the end of 1918 and renamed it to Bouda u Modrych kamenu (A Chalet at the Blue Stones) – Modrokamnna bouda (Blue-stone Chalet). The chalet became famous thanks to a pretty and corpulent landlady who was also an excellent cook too, known for her fantastic blueberry cakes with whipped cream.
The route T leading from the top of Cerna hora round Pardubicke boudy and then Modrokamenna bouda, built by a German Turnverein, provided and still provides skiers with a royal ride, who decide to continue to Janske Lazne and Dolni Marsov.