No special access issues
From Jyväskylä (about 6,8km) drive towards Tampere 9/E63. Keljonkangas junction turn to Säynätsalo, Kinkomaa, Keljonkangas. After about 4km turn to Martinnorontie. Park sensibly to the end of Martinnorontie. You can fit two cars at the parking.
Continue walking on the path. Boulder is situated 150 meters from the parking.
Boulder is situated close to houses. So NO boomboxes or loud noises, please!