Blood Omen: Legacy of Kain - Secret Area

Below the bat beacon on your way to Vorador's swamp, there is a lake to your left.
Go to mist form and walk across the lake off the screen.  You will come to a
stonehenge with a teleporter.  It will take you to a set of snake temples overrun
with werewolves.  There are about 15 secret points here, as well as more than 50 of
each artifact item.  Stock up.  The teleporter back is in the upper right hand temple.
Does anyone know were the lightning spell is or the heart of darkness spirit forge ?

Thanx Pete