return
{
  entities =
  {
    {"stone-wall", {x = -2.5, y = -1.5}, {}},
    {"wall-remnants", {x = -2.5, y = -2.5}, {dir = "south", }},
    {"wall-remnants", {x = -1.5, y = -2.5}, {dir = "south", }},
    {"wall-remnants", {x = 1.5, y = -2.5}, {dir = "south", }},
    {"wall-remnants", {x = 2.5, y = -1.5}, {}},
    {"stone-wall", {x = 2.5, y = -2.5}, {}},
    {"stone-wall", {x = -2.5, y = 0.5}, {}},
    {"steel-chest", {x = 0.5, y = -0.5}, {items = {["construction-robot"] = {type = "random", min = 1, max = 3}}, }},
    {"stone-wall", {x = -0.5, y = 2.5}, {}},
    {"stone-wall", {x = -1.5, y = 2.5}, {}},
    {"stone-wall", {x = 1.5, y = 2.5}, {}},
  },
}