There was little volcanic activity in Ruapehu’s Crater Lake in the late 1950s and early 1960s, and it became regarded as a tourist attraction. Melting snow and summer rain filled the lake, which was heated by steam. Renewed volcanic activity after 1965 made the lake more acid, and more unpredictable.
Te whakamahi i tēnei tūemi
Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference: AAQT6401, A68557
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