10 months ago
Last edited at 3:36PM on 2/10/2013
It depends on the consistency of each element. Snow that is compacted for a few days is more rigid than a freshly blown snow drift. Moist clay soil resists collapse better when tunneled than loose soil or moist sand. it is not advisable to dig tunnels in either one. it can be hazardous to your health. Children that don't know the dangers think of it as an adventure until the reality that the death of a playmate brings the danger into focus. All children should be warned ... many die each year because no one told them of the dangers associated with digging tunnels.