2025 Castle Rock Skywalk Riesling, Porongurup

This is a lovely, fine and delicate riesling, showing good flavour intensity, with a tense minerality balance, with some lovely fruit characters. It’s a blend of Castle Rock vineyards and provides a delightful, immediate drinking style of wine. It's fine, it's lingering, and there's so much happening here, as it extends with precision and drive through to a sustained finish. It's a really great current drinking wine, but everything is there to support some extended cellaring. Drink to 2033.

93 points Ray Jordan Wine Review 2027 

A fleshy, minerally, juicy riesling here. Sloshes around with stone fruit, ginger, pear, green capsicum, green apple and lime. Tangy and tart acidity runs through it all, finishes a little ticklish and zingy. There's a slightly oxidised fruit character in the mix here, which could be pleasing for some; so too the slightly overt greenery that emerges in this wine. A bit disjointed at present, but the future may bring things back together, and drinking is refreshing now. Drink to 2030.

88 points Mike Bennie for Halliday Wine Companion, March 2026

Castle Rock's Skywalk Riesling is a blend of four estate blocks and named after the lookout which is affixed to the side of Castle Rock itself, providing great views of the surrounding area.

From the warm and dry 2025 vintage, the fruit was machine harvested, with medium pressings juice cool fermented in stainless steel with a cultivated yeast strain and the wine bottled after a shirt maturation on lees.

A dry Riesling, this vintage was bottled with a negligible 0.78g/L of natural residual sugar.

About this producer

Castle Rock is a family winery established in 1983 by Angelo and Wendy Diletti. Their work is today continued by son Rob, who shares winemaking duties with Voyager Estate and Alkoomi Wines trained Curtin alumnus Sam Palmer.

Twelve hectares of vines are currently planted on the larger 55-hectare property that is located at an approximate elevation of 300 metres in the Porongurup subregion of WA’s Great Southern. The well-draining vineyard slope faces the morning sun and is cooled by a regular cooling breeze off the Southern Ocean. Dry-grown, it is farmed organically without pesticides or insecticides, with sulphur the only thing sparingly used to manage occasional outbreaks of mildew.

Riesling leads the way, with vines planted from 1983 onwards across six blocks, and Pinot Noir is increasingly important, with five clones planted from 1986. The two are supported by smaller parcels of Chardonnay, Sauvignon Blanc, Cabernet Sauvignon, Shiraz, Gewürztraminer and Grüner Veltliner.