Finding the Cave

[houyhnhnm102]

No: HPFGUIDX 136745

Saraquel:
I'm wondering if working on what's in the potion and what happens to
DD when he takes it will help resolve some of the questions. But
there are so many ifs and buts about that, it's going to take a
while to put something together.

houyhnhnm:
The potion, along with the spell protecting it (which defies even
Dumbledore's knowledge of magic,) bothers me more than the location of
the cave.

If RAB (whoever that is) got to the cave first, are the potion and the
charm the same ones Voldemort used when he placed the horcrux there
originally.  If so, how did RAB replace the potion after having drunk
it?  Or did RAB know how to break the charm (and then recast
it)protecting the potion, and thus didn't have to drink it?  S/he
would have to be an extremely powerful witch or wizard.  Or is the
potion Dumbledore drinks a different potion altogether?  I agree that
Dumbledore has a remarkably cavalier attitude about drinking it.  As
for the effect, as someone else pointed out, it sounds like somebody
getting crucio'd.  It reminds me of Harry's visions when he is inside
Voldemort's head, but I can't get any further than that.