Inaccurate?

Thaw

(Frostburn)

Transmutation [Earth, Fire]
Level: Druid 2,
Components: V, S, DF,
Casting Time: 1 standard action
Range: Close (25 ft. + 5 ft./2 levels)
Area: 10-ft. cube/level
Duration: Instantaneous
Saving Throw: None
Spell Resistance: No

All everfrost, slush, snow, mud, and ice in the spell's area are filled with heat.
Ice and snow become slush, slush becomes everfrost, and everfrost becomes bog (see page 88 of the Dungeon Master's Guide, for information on bogs).