No special access issues
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Best public transport would be the commuter train that stops in Huopalahti station.
Trains A, P and U stop in this station.
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Walk towards northwest about 700m until reaching the gravel tracks. Closest address is Orapihlajatie 33. For cars there is plenty of roadside parking space in Orapihlajatie.
SGT sector is easily accessed with strollers and kids. The bigger wall is in the woods and strollers can't be pushed to the area.