Altai Ibex inhabits the magnificent Altai Mountains of west Mongolia. The average trophy size is 40-43” (100-110 cm). Gobi Ibex inhabits the mountains of Gobi desert in the south and southwest of Mongolia. The average length of the Gobi ibex horns is 36-38” (90-100 cm). The horns are slimmer and shorter than Altai Ibex.