Reason: None provided.
Even if so, you obviously don't need things with enormous soundprofing properties, but very vulnerable to moisture to cover tunnel entrance, unless something very loud happens inside tunnel and you desperately want to deafen it.
Idea of using matresses to cover tunnel entrance will rise even more suspicions, than having matresses inside tunnel.
303 days ago
5 score
Reason: Original
Even if so, you obviously don't need things with enormous soundprofing properties, but very vulnerable to moisture to cover tunnel entrance, unless something very loud happens inside tunnel and you desperately want to deafen it.
Idea of using matresses to cover tunnel entrance will rise even more suspicions, then having matresses inside tunnel.
303 days ago
1 score