9th January 2007

Last night the temperature shot up (5°C was recorded on the summit of Aonach Mor) and heavy rain fell. The snow that has accumulated in the past few days became very unstable. We saw debris from five avalanches on Ben Nevis. These would have released naturally during the night. The picture shows the debris of largest of these. This was at long avalanche. The release zone would probably be in Tower Gully (altitude 1300m). The avalanche decended Observatory Gully with debris down, well past the base of Observatory Ridge, to an altitude of about 900m. The other picture shows the base of Zero Gully/Orion Face. Although it was melting rapidly today, if it freezes tonight as forecast conditions will improve.

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