From Wikipedia: Fed by four alpine
glaciers, Fox Glacier falls 2,600m on its 13km journey from the
Southern Alps down to the coast, with it having the distinction
of being one of the few glaciers to end among lush rainforest
only 300 metres above sea level. Although retreating throughout
most of the last 100 years, it has been advancing since 1985 at
an average of about a meter a week. The outflow of the glacier
forms the Fox River. During the last ice age, its ice reached
beyond the present coastline, and the glacier left behind many
moraines during its retreat