Reward
Step 1 Sail to Dragon Land
Captain Rey in Mortha (or any other captain of the new continent) sails to Dragon Land for 220 gold - say 'bring me to dragon land' (premium only). Timral at the dock takes you back.
Step 2 Up the dragon mountain
About 30 squares west of the dock go up the ramps at 31355,32363 (surface), 31355,32365 (floor 6) and 31357,32365 (floor 5) to the top of the mountain on floor 4.
Step 3 The chest
Crown legs and a crown armor lie together in the chest at 31357,32356 (floor 4), from level 50. Dragon lords and dragons guard the top.