Hidden monster in Pianus's Cave

I wanted to venture to the cave, I saw something move on the left side. I wanted to "attack" it just for the hell of it, AND I did damage! It was not Pianus otherwise I would see it O.o. What is it?

BTW, I can't see an HP bar.
EDIT: I did die in one hit though!

Take a screenshot?

Take a screenshot?

My vista wont let me....

It was a Blood Boom. Pianus summons them, and whoever killed the last Pianus in there left one (or some) of them behind. I usually clean up after myself, but some people leave them.

And if you don't do over 10k damage to a Blood Boom, it's going to blow up and deal around 10k damage to you.

Thank You! Now I know I can attack it's summoning!

Edit: It was hidden behind the rock.

Thank You! Now I know I can attack it's summoning!

Edit: It was hidden behind the rock.

Yes, Pianus summons very many of them and some often end up hidden on the sides.

Yes, Pianus summons very many of them and some often end up hidden on the sides.

Yeah, I know I've seen them before.

Another Question, I used a Dead Mine Scroll, and made it to Zakum's door. Is it possible for a level 48 spearman to go any further?

Yeah, I know I've seen them before.

Another Question, I used a Dead Mine Scroll, and made it to Zakum's door. Is it possible for a level 48 spearman to go any further?

No, you have to be at least level 50, completed the three stages of the Zakum quest and must be holding at least one Eye of Fire with you to enter Zakum's altar.