Nothing else of note happens.
You return to report your findings, are given a minor additional reward for your efforts (10 gp each; they assume you got plenty of worthwhile treasure, so they just let you keep that without enquiring or figuring taxation/legalities). Plans are made to reseal the Tor.
on dealing with other treasure you'd found:
the two non-magical pearls were worth 100 each;
I'm assuming gold is split evenly amongst the party.
the magic items are identified by the local scholars of your lord.
the magical pearl is a level 0 pearl of power
the translator's ring as you found out lets you understand goblin and giant (or whatever I said at the time)
the headband of hte stout heart gives you +1 resistance bonus to will saves
the lifting belt gives a +2 (i'm changing it from the module's +1) enhancement bonus to strength ONLY for purposes of determining carrying capacity.
The end! (plus whatever final words you care to add)
oh, and xp-wise, in case you use your chars elsewhere, I think the module totals to around 600 xp apiece.