The symbols displayed by survey have the following meaning:
Ocean: ~~ (Dark Blue)Plains: ::Light Forests: ttDense Forests: TTHills: ^^Mountains: /\Swamps: ++Lakes/Rivers: ~~ (Cyan)Deserts: __%Landmarks: ## or @@Road: ==You: *
Environmental effects can greatly change the color of your surroundings; examples include the color of the current moonlight, or vegetation changing color as the seasons progress. The exact colors seen will vary and might change drastically from one moment to another as environmental effects change. Ansi 16 or Ansi 256 also greatly affect your experience.
See also: mountaineering, desert travel, forestry, swimming, swamp travel, wilderness, ansi, moons, accessibility