Viirilä
ATC wall is hard to reach. I went there from north-east and headed south (uphills) when upon leaving. Both doable but north-east is much easier.
Viirilä
The area is access sensitive!
Parking near the sports field is not allowed any more. Park your car at Kuusijärvi recreational area or along Vanha Porvoontie. Smaller roads at the Viirilä community are too narrow for parking.