The Ruins of Alvior is an Expansion Feature in the Expansion 10 area of the map.

Upon first opening the expansion area the Ruins seem to serve no purpose other than decorative.
This changes with the Quest: Connoisseurs of Magical Artifacts
At this point they can be clicked.
The Ruins consists of 3 Rune Stones:

Each of the Rune Stones drops quest pieces that power up the Ruins and allows you to harvest each of them for 1xp and 10c every 1h.