I have finished this quest's! Yes, it is more than one quest!
I never did get a quest for that. In each five of districts of the temple there are (figurines, urns, etc). There is a limited amount of objects. If you find them all then you complete a quest (without having received it). (i don't recall the number of all the items. I think that scrolls are 3, urns are 10, figurings are 7, tablets 5)
When you finish it all then you complete also the explore ruins quest.