Named for its markings, this turtle has contour lines on its upper shell that look like a topographical map.
The carapace (upper shell) is olive green with fine yellow lines and has a distinct ridge (keel) along the center and serrations along its back edge. Both the head and legs have an intricate pattern of bright yellow lines. This turtle has a yellow spot behind the eyes. The plastron (lower shell) is cream to yellow in adults, but, in juveniles, the plastron has dark lines along the seams. Females get much larger than males, growing up to 27cm in carapace length, whereas males grow to only 13cm long.
The size of the clutch is between 6 to 20. The eggs are oval, about 3.2cm (1.3″) long, and have a flexible shell.