ORIVESI | Lakes, trails and breathtaking outcrops. The outcrops and cave by the Iso-Vuorijärvi lake are unique in the Pirkanmaa region. The Iso-Vuorijärvi trail has a campfire site under the outcrops of lake Iso-Vuorijärvi and a camping shelter at the Kirvesjärvi lake. The Siikajärvi hiking trail goes by the Saarijärvi and Siikajärvi lakes and in the forest. The rocky beaches of Siikajärvi offer a beautiful view of the lake.