it would be fun if artifacts not only text would have but also possible that you put tech, buildings, upgrades or surivors that can't be destroyed in them.
it would even be fun if there is a emitter in it that starts when you reach it or some losse creepers.
or if you touch them there will come spores out or the spore countdown starts.
and to not now if there are upgrades in them the upgrades button down in the screen will appear when ther ruin is touched. and the countdown will only be visible when started.
thanks kinda like my "If this, then that" events idea
try stacking them , i wish i could make a trigger like that on my map, if totems are started then thor appears but since you cant leave without collecting tech the portal wont open.