From WoWWiki

Frostsaber Rock is a large jutting tor in the northern part of Winterspring. This site is home to a great pride of wintersaber cats, ruled by the gargantuan female named Shy-Rotam.^{WoWRPG 213}

At the very apex of Frostsaber Rock stands Rivern Frostwind of the Wintersaber Trainers. He offers friends of the Alliance to work for him, and in exchange he will teach them how to tame and ride one of the beautiful beasts.

Subzones of Winterspring
Darkwhisper Gorge • Dun Mandarr • Everlook • Frostfire Hot Springs • Frostsaber Rock • Frostwhisper Gorge • The Hidden Grove • Ice Thistle Hills • Lake Kel'Theril • Mazthoril • Moon Horror Den • Owl Wing Thicket • The Ruins of Kel'Theril • Starfall Village • Timbermaw Hold • Timbermaw Post • Winterfall Village