2 November 1938 – April 1944 The border, the revolt, and a tunnel through the mountainHranica, vzbura a tunel cez vrch

The First Vienna Award of 2 November 1938 gave southern Slovakia to Hungary and cut the railway at Plešivec, at the foot of this valley. The mill depended on that railway for everything it brought in and everything it sold, and 640 Slavošovce workers were out of a job. On 19 November the village formed its own committee and demanded the government restore the links and the mill's production — or else annex the whole valley to Hungary, because economically it was finished. The revolt that followed ran from 22 to 25 November; gendarmes were sent from Brezno to Slavošovce and Štítnik, windows were broken at two Czech families' houses, and eleven people were arrested across the valley. The Slovak State's answer was the gemerské spojky, the Gemer connecting lines: from December 1940 it began building a railway west into the Muráň valley, and in 1941 it started the 2,401-metre tunnel under the hill called Homôľka. The bore was holed through in April 1944.Prvá viedenská arbitráž z 2. novembra 1938 odovzdala južné Slovensko Maďarsku a prerezala železnicu v Plešivci, na spodnom konci tejto doliny. Papiereň bola od tej trate závislá vo všetkom, čo dovážala aj čo predávala, a 640 slavošovských robotníkov ostalo bez práce. Devätnásteho novembra si obec vytvorila vlastný výbor a žiadala od vlády obnoviť spojenie a výrobu v papierňach — alebo pripojiť celú dolinu k Maďarsku, lebo hospodársky bola stratená. Vzbura, ktorá po tom prišla, trvala od 22. do 25. novembra; do Slavošoviec a Štítnika poslali četníkov až z Brezna, dvom českým rodinám vybili okná a v doline zatkli jedenásť ľudí. Odpoveďou Slovenského štátu boli gemerské spojky: od decembra 1940 sa začala stavať železnica na západ do Muránskej doliny a v roku 1941 sa začal raziť 2 401 metrov dlhý tunel pod vrchom Homôľka. Prerazili ho v apríli 1944.