With Lord British off to confront Blackthorne, you must find a way to reach him. But if the Abyss is where they have gone there really is no way after him. The Isle of the Avatar is hidden and the entrance to the Abyss on the isle was sealed by the monarch himself. With options limited as this the only availible step is trying to find a clue on the wastes of Skara Brae.

Skara Brae
{
  [59°6’S,56°2’W] spirituality statue
  [57°50’S,55°8’W] giant crab
  [54°1’S,53°40’W] giant crab
  [53°1’S,57°49’W] phase spider
  [55°8’S,57°47’W] reag:pearl
  [57°3’S,57°55’W] book:456 Down to the well of Souls
  [50°52’S,58°59’W] creeper plant
  [51°37’S,60°42’W] liche
  [50°58’S,60°28’W] potn:serpentwyne
  [47°46’S,62°5’W] sea serpent
  [50°44’S,62°15’W] reag:pearl
  [53°4’S,59°16’W] mscl:Death
  [53°11’S,56°50’W] Hand of the Sentinel (Stand here and she recites mantra)
  [53°36’S,61°15’W] creeper plant
  [54°53’S,59°52’W] creeper plant
  [56°52’S,60°13’W] (2) gazer
  [58°13’S,58°20’W] phase spider
  [56°54’S,62°6’W] creeper plant
  [56°51’S,63°39’W] phase spider
  [45°8’S,66°35’W inside the Temple of Spirituality] Well of Souls (teleports to the spirit realm [55°53’N,99°46’W])
  [58°21’S,52°19’W] chest opened by ranger key
  {
    armr:blackrock:helm
    armr:blackrock:gauntlets
  }
  spirit realm
  {
    [55°49’N,99°26’W] Well of Souls (teleports to Temple of Spirituality [45°29’S,66°39’W])
    [57°14’N,105°32’W] Calan (knows of the book of truth)
    [59°36’N,105°11’W] house
    {
      [out in front] Elizabeth (knows of the candle of love)
      (2) drnk:bottle of whiskey
      book:436 the ruined temple of Empath Abbey...
      [chest] (2) weap:ammo:oil flask
    }
    [56°26’N,109°51’W] farmhouse upstairs
    {
      qust:Elizabeth's Baby
      wardrobe
      {
        gem:topaz
        (2) tool:clean bandages
      }
    }
    [61°31’N,106°8’W] pub
    {
      Mathis (knows of the bell of courage)
      book:437 after the cataclism, what is left of Serpent's Hold...
      (2) drnk:bottle of whiskey
    }
    [from cave starting at 58°57’N,112°15’W] cave room
    {
      Shamino
      book:139 Shamino's Journal
      sign:166 book of truth
      sign:165 candle of love
      sign:164 bell of courage
    }
  }
}