There are other three spot of that treasure you found 20 to 30 feet away each other, the distance of each depends on the terrain. Try to chisel that big rock and the hardest part has the treasure inside it. If you crack open that big rock and found nothing, it means the treasure is just beneath. That heart shape leaning to the side of that rock signals "here we are, get us out of here", he-he. Anyway that white cement and sometimes look like white coating on cement are standard signal soil on top and around the treasure vault. I think it is a shock absorbing soil material to protect the cement vault. That triangle and rectangle rocks are telling you "hey there is a gold cache nearby". Be careful, don't ever tell the truth to anybody not involved in that digging... GOD BLESS US ALL!