Jaanankallio is the oldest and most popular crag of the Hyvinkää region. The quality of the rock is "gabro" which is a hard rock quality with a smooth surface. There are many straightish crack lines and compared to granite the climbing is more direct, more smooth and with less holds.
The main face is a little shaded by trees but it's facing southwest and thus rather sunny especially on the top parts. The main face is well visible on the Kytäjäntie and hard to miss. The ground below is more or less even.
If you wish to arrive by publich transportation there is a local bus from Hyvinkään train station on working days. During weekends it's possible to walk from the Helsinki-Tampere -highway (about 1h) or bike from the Hyvinkää train station.