A woman wearing a protective hygiene (pollution) face mask on the London Underground subway system, London, England, United Kingdom, Europe

photography vertical color image travel destinations travel london capital cities england uk underground rail railroad station transportation indoors day selective focus one person people women adult one woman only only women adults only brown hair looking down hygiene mask latex gloves blue holding using phone smart phone communication seat adults person daytime indoor inside one person only 1 person 1 person only woman female females travel destination tourist destination tourist destinations