The phrase "most coal-and-ice" can be used to describe elements of a frigid or inhospitable environment. Some synonyms for this description include Arctic-like, frozen-wasteland, and wintry tundra. These terms suggest an area that is cold, dark, and difficult to survive in without protection. Other synonyms might include glacial, icy, or snow-covered, indicating a landscape that is dominated by frozen water and snow. Overall, the phrase "most coal-and-ice" is a powerful way to convey a sense of harshness and adversity, whether in a literal or figurative sense. Using synonyms can help to expand on these themes and deepen the emotional impact of the description for the reader.