Choose your path to the "der fuchsbau" wisely
... you simply enter "Iglsbergweg 340", "5753 Saalbach Hinterglemm", "Federal State of Salzburg", State of "Austria" into your GPS and follow the instructions of the friendly voice.
Arrival at the train station in “Zell am See” or the train station in “Saalfelden”, onward travel by public bus or simply by taxi directly to Saalbach Hinterglemm.
Now decide again wisely whether you get off at the "Saalbach Jausern" or "Saalbach Schönleitenbahn" bus stop, because it depends on this decision whether you can go directly to your FOXHOLE ... or have to walk 300 m back :p --> so better take JAUSERN.
Arrive at Salzburg or Munich airport, continue your journey to Saalbach Hinterglemm, preferably cheap & comfy with the holiday shuttle – please make a RESERVATION beforehand! If you missed this, see "by train" or check out a rental car and follow the instructions under "by car"!
... we haven't had this case yet. A hiking map would certainly be recommended for this.