Precambrian rock

Park interpreter student Abby Matheson shows hikers some rocks in Scenic Canyon Regional Park that are two billion years old — some of the oldest found in the Okanagan.

About 20 people stepped back in time during a hike Saturday morning in Kelowna's Scenic Canyon Regional Park.

The group participated in a free hike led by a park interpreter student who explained the geology of the Okanagan.

Among the interesting facts the hikers learned:

— 25,000 to 10,000 years ago, the whole region was covered in an ice sheet about two kilometres thick.

— Mission Creek lies in a deep fault, or crack, in the earth's crust.

— the rocks on the east side of Okanagan Lake are older than the rocks on the west side of the lake.

This three-hour hike is offered twice more — at 9 a.m. Saturday, Aug. 10, and at 5:30 p.m. Thursday, Aug. 15. Pre-register at eeco@cord.bc.ca.