Alania
...that the medieval kingdom of Alania controlled the most practicable route through the Greater Caucasus?
...that the medieval kingdom of <b id="mwBUY"><a href="./Alania" id="mwBUc" rel="mw:WikiLink" title="Alania">Alania</a></b> controlled the <a href="./Darial_Gorge" id="mwBUg" rel="mw:WikiLink" title="Darial Gorge">most practicable route</a> through the <a href="./Greater_Caucasus" id="mwBUk" rel="mw:WikiLink" title="Greater Caucasus">Greater Caucasus</a>?