The Witchers' Forge

Geralt followed the directions found in the tome's notes and arrived at an old iron mine. After dispatching an earth elemental guardian, he found the tome could be used as a sort of key opening a passageway leading to an old forge. To his great surprise, this forge began speaking to him. Though some might suspect the witcher had merely breathed a bit too much of the musty mine air, he claimed an ifrit, a fire elemental of some kind, had been used ages ago by a mage who created special equipment for the Wolf School witchers. This elemental remained vigilant all these years after the mage's death and thus Geralt had to defeat it in order to get at the secret stash of high-quality gear hidden behind the forge.