**Build: Arctic dome fortress (righ...

**Build: Arctic dome fortress (right half shown, mirror it for the left half)** **Overall shape:** A large, low, wide domed fortress, about 3 times wider than it is tall. It looks like a flattened half-sphere or saucer. It sits on a flat icy base at ground level, and the structure is symmetrical along a center line. Build the right side as shown, then mirror it. **Colors and materials:** - Main hull: pale blue-gray, like light blue concrete, smooth concrete, or a blue-gray terracotta mix, with a slightly lighter top - Dark blue-gray trim: the horizontal ledge and the seams between sections - Base: white and light blue ice, made of packed ice, snow blocks and blue ice **Structure from bottom to top:** 1. **Base layer:** A thick, flat, icy platform around the whole fortress, with a jagged