There's a 3,200-square-mile one of these masses in Vatnajokull, Iceland
[DOC] [TLE] Modern Iceland - JStor [PAR] maples with their tufted crests, forming a canopy one hundred feet ... an 
inexhaustible spring of native unsullied energy, there ... could and did 
communicate such vitality to the masses .... Vikings, who, through these winding 
ocean-rivers, ... that occupies the south-east of Iceland, the Vatnajokull ..... abouit 
3,200 square miles.