Royal Cartographer Fantasy World Map Prompt (Detailed Scenario)

A highly detailed system prompt for Nano Banana Pro Agent V1.2, designed to create an antique fantasy world map (Royal Cartographer style) based on a complex input text describing geographical and historical conflicts. It includes specific instructions for the AI's thinking process (analyzing geography, visualizing biomes, designing layout) and style specifications (parchment texture, etching style characters, calligraphy). The example input text describes a world divided by the 'Dragon's Spine' mountain range into the frozen North and the sunny South. Via YouMind OpenLab prompt library (MIT).