e.marker([[O = lua:one_way_stair { desc = "A dusty staircase",
                                           dst  = "minitomb",
                                           dstorigin = "in a tomb",
                                           overmap = "dusty staircase",
                                           floor = "stone_arch" }]])
        e.kfeat("O = enter_portal_vault")
        e.colour("O = yellow")

 local timeout_turns = crawl.random_range(1500, 2000)
  local messager =
    timed_msg {
      visible = true,
      -- $F{xxx} will be substituted with the 'entity' property of the timed
      -- marker, or with the desc property (if entity is not set).
      messages = time_messages(timeout_turns,
          "Nearby sand pours into $F{the}, lightly covering it.",
          "Nearby sand pours into $F{the}, greatly covering it.",
          "Nearby sand pours into $F{the}, almost completely blocking access.",
          "$F{The} has disappeared completely beneath the sand.")
    }
  e.lua_marker('O',
      timed_marker {
        desc = "A sand-covered staircase",
        entity = 'staircase',
        dst = "minitomb",
        dstorigin = "in a tomb",
        overmap = "sand-covered staircase",
        turns = timeout_turns,
        floor = "stone_arch",
        msg = messager })
  e.kfeat("O = enter_portal_vault")
  e.colour("O = yellow")

-- Use the following line in destination maps after all SUBSTs
-- : minitomb_setup_features(_G)
-- Note that the function also defines < to be the exit portal.

default-depth: D:4-8

default-depth: D:4-8

#### The portal vaults.####################################

#### The portal vaults ####################################

  e.marker([[O = lua:one_way_stair { desc = "A frozen archway",
                                     dst = "ice_cave",
                                     dstname = "Ice Cave",
                                     dstname_abbrev = "IceCv",
                                     dstorigin = "in an ice cave",
                                     overmap = "frozen archway",
                                     floor = "stone_arch" }]])

  local timeout_turns = crawl.random_range(1200, 1700)
  
  local messager = 
    timed_msg {
      visible = true,
      -- $F{xxx} will be substituted with the 'entity' property of the timed
      -- marker, or with the desc property (if entity is not set).
      messages = time_messages(timeout_turns,
                               "$F{The} is slowly melting away.",
                               "$F{The} is melting away.",
                               "$F{The} is quickly melting away.",
                               "$F{The} has just melted away.")
    }
  e.lua_marker('O',
      timed_marker {
        desc = "A frozen archway",
        entity = 'archway',
        dst = "ice_cave",
        dstname_abbrev = "IceCv",
        dstorigin = "in an ince cave",
        overmap = "frozen archway",
        turns = timeout_turns,
        floor = "stone_arch",
        msg = messager })

A dusty staircase
It is said that some minor relatives of the pharao were entombed here.
%%%%

%%%%
A sand-covered staircase
You can make out a staircase leading downwards into a small tomb. Sand
surrounds the staircase and is continuously pouring onto it.
They said that some minor relatives of the pharaohs were entombed here.