Joppenbergh Mountain
... that in 1937, the slopes of Joppenbergh Mountain were coated with borax for a summer ski jumping competition?
... that in 1937, the slopes of <b id="mwFwY"><a href="./Joppenbergh_Mountain" id="mwFwc" rel="mw:WikiLink" title="Joppenbergh Mountain">Joppenbergh Mountain</a></b> were coated with <a href="./Borax" id="mwFwg" rel="mw:WikiLink" title="Borax">borax</a> for a summer <a href="./Ski_jumping" id="mwFwk" rel="mw:WikiLink" title="Ski jumping">ski jumping</a> competition?