sastrugi
/səˈstruːɡi/
noun
- Long, wavy ridges of hard snow formed by the wind on a flat surface, especially in polar regions.
- Walking over sastrugi is difficult because the ridges are uneven and can trip you up.
- From a distance, the sastrugi looked like frozen ocean waves stretching across the Antarctic plain.
- The explorers had to navigate carefully around the sharp sastrugi that covered the ice field.