Marcin Sieniek
Mountain View, California
Favorite Activities
Marcin Sieniek completed Pu'u Huluhulu via Napau Crater Trail
14 days ago
Marcin Sieniek completed Emesine Cave
about 2 months ago
Marcin Sieniek completed Mauna Loa Trail to Red Hill
3 months ago
Marcin Sieniek completed Kiholo-Huehue Trail
3 months ago
Marcin Sieniek saved Koala Historical Sites Trail
4 months ago
Marcin Sieniek completed Kaumana Caves
4 months ago
Marcin Sieniek completed Kaumana Trail
4 months ago
Marcin Sieniek completed Makuala O'Oma Trail
5 months ago
Marcin Sieniek completed Puu Huluhulu Trail [CLOSED]
5 months ago
Marcin Sieniek saved Captain Cook's Monument Trail
5 months ago
Marcin Sieniek completed Captain Cook's Monument Trail
5 months ago
Marcin Sieniek saved Makuala O'Oma Trail
5 months ago
Marcin Sieniek saved Pu'u Wa'a Wa'a Cinder Cone Trail
5 months ago
Marcin Sieniek completed Pu'u Wa'a Wa'a Cinder Cone Trail
5 months ago
Marcin Sieniek saved Koai’a Corridor
5 months ago
Marcin Sieniek completed Koai’a Corridor
5 months ago
Marcin Sieniek saved Mauna Ulu Eruption Trail
5 months ago
Marcin Sieniek saved Kau Desert Footprints Trail
5 months ago
Marcin Sieniek completed Kau Desert Footprints Trail
6 months ago
Marcin Sieniek added Afternoon hike
14 days ago