Rhaknar's Mad is, at least according to common knowledge, the labyrinth that the legendary mage Rhaknar contructed to hide his Shadow portal where he crosses into the Neverness to gain unearthly (or rather 'unsrythly') power. Note that players without a Quickstone can only unlock one level of the labyrinth each real world day (midnight synced to U.S. Eastern Time; GMT -4 or -5). This originally applied to all players, the change was announced on 12/1/14.
Walkthroughs for the maze proper (e.g. anything Level 1 or after) courtesy of forum usernames 'Oldschool' and 'Thingirl'.
In order to access the maze you must unlock Fogbough Forest (Outer Wood) and complete an adventure called "Rhaknar's Mad", which can be found in the Griffon's Ledge Alehouse in Trithik. The Dreadstone saga is not immediately necessary to enter the maze, but the plot later in the maze requires its completion.
The tall, broad-shouldered man, the crown of his bald head and well-defined angles of his square face red from the winter chill, steps into the common room and shudders. After pausing to squash a scuttling roach with the toe of his sizable, black boot, the intimidating figure, his entrance already having served to quell the bustling tavern's incessant din, turns and strides in your direction...
Regarding the schedule for unlocking levels without a Quickstone:
You can only unlock one level per server day, and if you skip a day you don't get to catch up.
A level is unlocked as soon as you receive the experience from placing your hand in the impression at the end of the previous level.
The timer for unlocking a new level is triggered as soon as you unlock the previous one, not when you complete it. This means that you could start a level at 11:59 p.m. (server time) on one day, finish it at your leisure, and have immediate access to the next level.
If you quit without saving, your unlocked levels are reset.
CONCLUSION: It's a good idea to unlock each level, then save your game before completing it.
Players with a Quickstone are advised to either pay close attention to the walkthroughs and their health or enter a SAFE point to heal, and possibly even save, between levels. Many include NV draining traps and you may not always be able to exit at will.
Some levels don't allow you to leave once you've stepped off the "landing pad". However, you can still enter the level and leave at will UNTIL you move away from that spot.
Don't underestimate the usefulness of the items you collect in the Mad. Some of them have special powers that only work in the Mad, or only in certain areas of the Mad. Try them out!
Tunnels built by Rhaknar, southeast of Highmeadow and Blacktor Temple.
They came upon you in the tangled dales south of Highmeadow, tearing through the bracken, the inescapable, nauseating stench of their rot filling the forest. Before you could even consider evasion, you were surrounded by a vast, ghoulish legion of undead.
"These three men will guide you to the ruins of Fallentree," says Emithayla. "There, in the sanctum of our most ancient shrine you will find the deliverance you seek. You must make haste! The curse that afflicts you grows stronger with every day that passes...it may soon be beyond our power to defeat it..."
The man in the red armour steps forward and thrusts out his right hand. You instinctively fall back and assume a defensive stance, your swift maneuver eliciting a series of puzzled looks from both the armoured stranger and the grim, hooded men at his side...
Emithayla tells you that the last she saw of him, as she shielded three of her companions from the wizards' parting volley of magic, was his limp body being dragged out of the tavern by two of the dark-garbed assailants...
Seeking the final piece of the 'Emblazoned Key' -- the symbol that will unlock the deepest reaches of Rhanknar's 'Mad' -- your quest first leads you to Quillbog, a small settlement snug between the vast and ancient Syrbryn Forest and the perilous Bellsong Slough...