We were cycling, then we were lost. We came into this area and we took no notice of the sign. We decided to look on the map on our phones but we had barley any internet or battery, so we carried on till we saw this graveyard and a church right next to it .We decided to stay in it for the night, as we approached the church, we heard a shuffle and we heard a shriek from behind. One of our friends went missing, we looked behind and saw Plantera trying to assault us and were only in pre-hardmode. In consequence we failed, we should've paid attention to the sign.