Revelation space - Alastair Reynolds

Nine hundred thousand years ago, something wiped out the Amarantin. For the human colonists now settling the Amarantin homeworld Resurgam, it's of little more than academic interest, even after the discovery of a long-hidden, almost perfect Amarantin city and a colossal statue of a wingest Amarantin. For brilliant but ruthloess scientist Dan Sylveste, it's more than merelty intellectual curiosity - and he will stop at nothing to get at the truth. Even if the truth costs him everything. But the Amarantin were wiped out for a reason, and that danger is closer and greater than even Syveste imagines . . .

REVELATION SPACE: a huge, magnificent space opera that ranges acrioss the known and unknown universe . . . towards the most terrifying of destinations.