The land feature primarily consisting of ice and snow is a glacier. Glaciers are large, slow-moving masses of ice formed from compacted snow, and they are primarily found in polar regions and high mountains. They play a significant role in shaping landscapes through erosion and deposition, and they serve as crucial freshwater reservoirs. However, glaciers are increasingly threatened by climate change, leading to rapid melting and contributing to rising sea levels. Conservation of glaciers is essential for maintaining ecological balance and freshwater supplies.