The crossword solution for the term 'Tundra Feature' is ICE, which stands for a frozen form of water. ICE is a common feature of tundras, which are cold, treeless regions located in the Arctic and Antarctic regions. ICE is also found in other cold climates, such as mountain tops and high altitudes. ICE is an important part of the tundra ecosystem, providing habitat for animals and plants, and helping to regulate the climate.