Heavy Metal Step 4

I did Step 4 in the Heavy Metal event in WAR. It was to find the sand castle in the factory scenario. I tried to find it on my own, but I could not the first time, so a guildie pointed out where it was. It is easy to find. Often I get frustrated with games that do not have any hints as to where something is, but I am trying to get used to it. I guess the first person to find it has to tell others until everyone knows where it is. No spoilers here, so ask someone.