Fictional Island Map Poster - Colorful Geological Strata

Fictional island map poster with colorful geological strata arranged across an imagined archipelago. The decorative map presents a made-up landscape rather than a named real-world place. A jagged mountainous spine runs through the elongated main island toward a broad branching delta, with smaller islands offshore. Teal, rust, ochre, lilac, and pale blue layers sit within dark ink coastlines, fine contour marks, and a circular cross-section inset. Physical, unframed print in A5, A4 or A3. Frames and styling accessories shown in mockups are not included.