I'm given to understand these are actually Transcaspian Urial (Ovis vignei arkal) rather than Afghan Urial (O. v. cycloceros), and that the signage was merely never corrected after the error was discovered
@TeaLovingDave You're correct, these are arkal, though some authorities lump the two I believe. Under that taxonomy, which I believe @lintworm's ungulate thread follows, cycloceros is the correct name.