I can't place structures or Nettles in the Jungle Biome, at least the spot closest to my base.
I cleared the Area early game from Spider Monkeys, could their placement hindrance still be left there?
I could place a couple Nettles(the ones you see around me) but the lines going across the Jungle floor were narrow and flowed randomized on the floor.
I am pretty sure my Spider Monkey theory is true, because there is nothing else there that could hinder building.
Try to place items on area previously occupied by Spider Monkeys.