5 days a good amount of time for Shiga Kogen?

Hi there

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Question for all those who know Shiga Kogen well.

Is about 5 days there a good amount of time? Too short/long? We all ski and so can use all of the areas.

We're trying to balance out Shiga Kogen, Nozawa, Myoko and perhaps Hakuba.

Danke gozaimasu!