SCIENTIFIC JOURNEYS / EXPEDITIONS
Latvia: 1994 / 1996
NW Russia: 1996
Costa Rica: 1996
Mallorca (Spain): 1997
Corsica (France): 1997
Crete (Greece): 1998
Tenerife / Canary Islands (Spain): 1999
Eastern Greenland: 1999
Iceland: 1999
USA (California, Arizona, Nevada, Utah): 1999 / 2000