WARD, Colo. (CBS4) – The search for a hiker who’s been missing for a week will ramp up on Wednesday.

Boulder County and Grand County search crews will use K-9 units to help find Patricia Wallace, 74, of Lafayette.

Wallace disappeared July 3 when she split up with her hiking partners and took a different route. They were hiking in the area of Camp Dick near the Peak to Peak Highway.

She was last seen on Buchannan Pass Trail.

There have been conflicting reports on exactly which way Wallace was hiking when she disappeared.

(credit: CBS)