Interiora regionis eius haud sane adiri sine magna vexatione exercitus poterant; iuga montium, praealtae silvae rupesque inviae saepiunt, ea quae plana sunt novo munimenti  genere impedierant barbari.
The interior parts of that region, however, could not be approached without greatly fatiguing the army; ranges of mountains, lofty forests, and impassable rocks shut them in, and such parts as are level the barbarians had obstructed by a novel  kind of fortification.
final_alignments\Quintus_Curtius_Alexander_Book6.json