https://civitai.com/user/Dream2046 Heart of Mars: Revelations of the Inner Earth Civilization Beneath the red sands of Mars lies an ancient and highly advanced civilization—the Inner Earth civilization. This civilization has existed for tens of thousands of years, with technology far surpassing that of Earth. However, due to their wariness of the outside world, they have chosen to live deep within the Martian crust, isolated from the rest of existence.