Echoes of the Great Song - David Gemmell

This is a stand-alone novel by an established writer of fantasy novels. I have enjoyed many of his books in the past, but this one is not up to his usual standard. The story is muddled but seems to be about a race of humans, the Avatars, who arrived on a primitive but inhabited planet thousands of years in the past. The invaders kept all technology to themselves and used the natives as workers. However, there was some great cataclysm and the alien race lost most of their sources of power, and their numbers dwindled. At the start of the book the Avatars are searching for power sources which are buried under ice to recharge their weapons and batteries. Meanwhile, ...