A Mysterious Copy of a Map is the last objective of the Treasure of Daybreak quest series.
Treasure of Daybreak is an Exploration questline of 3 quests, located in Monolith Wastelands.

You can find the quest in Exploration (J) → Stonegard → Monolith Wastelands → Treasure of Daybreak

Treasure of Daybreak Quest Objectives
1. Defeat Flame Fighter and acquire Loot Chest Key 11 – Quality Armor Growthstone
43,697
31,577 EXP
2. Open theLoot Chest at the Sandflame Bandit base to collect Collection Codex: A Mysterious Copy of a Map
8- Quality Weapon Growthstone
9,634
6,961 EXP
3. Acquire a treasure using the Collection Codex: A Mysterious Copy of a Map
1 – Flame Fighter
45,814
33,106 EXP
Flame Fighter Shapeshift Morph is the coveted reward!!!
Not to mention the generous exp for its level.

A Mysterious Copy of a Map
A Mysterious Copy of a Map is an objective in the Collection Codex.
It is not simply something you can just pick up at any time, however like the usual Collections.

Codex (J) → Collection → Near Vienta Village

Spawns at Daybreak
A Mysterious Copy of a Map is only visible during a short time after the sun rises in game.
You can find when Daybreak is going to occur by hovering your mouse over the time and weather UI on the top left of the minimap.
There are 2 hours in every day and 30 minutes of night.
Go to the correct location at night, right before daytime is about to begin.

Location of Mysterious Copy of a Map.

Travel to two tall monoliths SW of Sandworm Lair Waypoint.

Look for a group of three monoliths, two small and one very large.
The largest monolith has glowing hieroglyphs on it and a glowing Mysterious Book on the floor.
- South of that largest monolith there are two smaller monoliths.
- A chest will appear at the most southern small monolith.

Chest Buried in the Sand will appear about 30 seconds after daytime arrives.
