Thanks to its famous pass flanking it this buttress offers an easy approach- just follow the signs. Like many Apostle buttresses Kasteel has two facets- West and South Facing, however most of the best routes are on the West.
There are two distinct approaches depending on the routes, and so with time this Wiki might be edited accordingly, but in the Mean while it will be broken as such below.
Kasteel West Face
These routes are best approached from the Valken/Barrier path.
Castle Rib * E2 or 14
G. Athiros, A. Killick and Miss T. Snijders 1967
Allow plenty of time to find the start.
Start: The route lies up the curved rib which is capped by an overhang, 12m right of Valken Ravine (Right-Hand Route), and to the left of Kasteels Gully.
Pitch 1. 18m (D) "Black Face Pitch." Climb the black face 13m right of Valken Ravine waterfall. Walk left to a corner 5m right of the Right-Hand Route.
Pitch 2. 28m (F1 or 15) Climb the corner to an overhanging flake. Step up onto the flake, then move up to a higher foot rail. Traverse right for 6m and climb s clean face with a tricky finish. walk right for 19m to the next beacon beneath an overhang.
Pitch 3. 30m (E2 or 13) Climb a short distance up a crack beneath the overhang, then diagonally left. Once above the level of the overhang, move right, then climb an easy face.
Pitch 4. 8m (D) Climb the corner directly move to a stance shared with Valken Ravine RH. One is now beneath the prominent bulge on Castle Rib.
Pitch 5. 15m (E2 or 13) A few overhanging moves on the right of the bulge enables on to traverse to a chimney, which is then taken to complete the route.
Kasteels Gully C Route
K. Cameron, F.G. Clarkson and H.E. Walton 1912
"Another popular and well patronized climb. Allows much variation."
Start: Walk up Valken Ravine until a cave/overhang is reached level with the bottom of Barrier Cave. Continue up VR a few meters then walk right onto the wide ledge above the overhang. Walk up to the foot of the subsidiary buttress on the right of VR until directly below a prominent prong of ricks jutting out some 200m above. 3 or 4 nondescript scramble pitches up the gully brings one to move vertical rock. Keep over o te right and climb:
Pitch 1. 12m (C) A vertical crack with excellent holds. scramble left to the foot of the final chimney below prongs.
Pitch 2. 20m (C) climb the chimney on its right wall.
Kasteels Buttress B Route