Sorry, the title is the best I can do at this time of the morning after cleaning up cat barf. Dr. Tony Phillips of Spaceweather leads a balloon-borne effort to monitor atmospheric radiation, and a year ago they lost a balloon in the Western USA mountains. Where is it?
Under a glacier.
A glacier (US: /ˈɡleɪʃər/; UK: /ˈɡlæsiər,ˈɡleɪsiər/) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water.
Yeah. Glaciers are not snow, but ice. How did his balloon end up under a glacier? Either mischievous goblins, or glaciers, at least small glaciers, can form really fast.