Tarsis owns a 100% interest in 186 claims (approximately 3,900 hectares), named the Rosie property. The property is located at the eastern end of the Nisling Range, approximately 100 kilometers northwest of Haines Junction, Yukon.

The property features strong potassic alteration and silicification within an underlying granodiorite host. Pathfinder element geochemistry from prior government stream sediment sampling is anomalous for arsenic (98th percentile), antimony (98th percentile) and molybdenum (98th percentile) as well as having elevated gold (95th percentile) and copper (98th percentile) values.

Preliminary sampling by Tarsis in late 2010 collected 31 locally derived talus samples that returned assays ranging from below detection to 0.03 g/t gold, 1 ppm to 244 ppm copper and below detection to 29 ppm molybdenum.

The company believes the environment has potential to host porphyry mineralization.

Access to the property is by helicopter with the nearest road located at the head of Aishihik Lake, approximately 18 kilometers to the east. A winter trail terminates four kilometers south of the property.