Ok, so when grover was telling percy for the first time about how Thalia was turned into a cây i noticed something. he đã đưa ý kiến that ever since thalia's SPIRIT had been protecting the camp. What protected the camp before that?

I don't think there was anything protecting the camp besides the campers.

well, before the cây the campers actually tried a couple of other different things, one time way back when, the campers in the Hephaestus cabin, used their fathers blessing to build a great golden dragon to defend the camp it worked for a while until it went wild and ran into the forest never to be seen again, if bạn want to read thêm about it the story is in the Demi-god files

in the book it was the golden fleece. Remember!?!?!...Member?!?!!