Sai Kung West Country Park, Country park on the Sai Kung Peninsula, Hong Kong

Sai Kung West Country Park (Wan Tsai Extension) covers 123 hectares of the Wan Tsai Peninsula in northeast Hong Kong, designated on 14 June 1996. Two campsites, Wan Tsai South with 10 pitches and Wan Tsai West with 20, have shower toilets usable by people with disabilities. A 2 km loop on a former borrow-area service road forms the Wan Tsai Nature Trail, joined by an orienteering trail and a mountain-bike trail.

The Wan Tsai peninsula was a borrow area that supplied fill for the Sha Tin new town. After extraction ended, the site was designated on 14 June 1996 as the Wan Tsai Extension of Sai Kung West Country Park under the Country Parks Ordinance. A large-scale tree-planting programme followed, using Taiwan acacia, horsetail tree and slash pine.

The park's name comes from Wan Tsai, the peninsula it covers; the area was a borrow area supplying fill for the Sha Tin new town before becoming a park. The two camps, Wan Tsai South and Wan Tsai West, have 10 and 20 pitches. A 2 km nature trail follows the small road left from the borrow period around the peninsula.

The park lies on the Wan Tsai Peninsula, reached on foot from the Pak Tam Chung area of Sai Kung; the 2 km Wan Tsai Nature Trail follows a small vehicle road left from the borrow area and circles the peninsula. The trail, a fitness orienteering course and a mountain bike trail share this route. Wan Tsai South campsite has 10 pitches and Wan Tsai West 20, with shower toilets usable by people with disabilities.

The forest here was planted after quarrying ended, using Taiwan acacia, beefwood and slash pine, later joined by paperbark and red gum. Look for porcupines, pangolins and masked palm civets, plus stray cattle wandering among the trees; the bird list includes francolins, swifts and the white-throated kingfisher.