Cobden Cave is a small scenic spot at Cobden, on the north bank of the Grey River mouth across from central Greymouth, rated 3.9 from 73 Google reviews.
Coastal caves reward a little planning. Access often turns on the tide, and West Coast swells can run further up a beach than newcomers expect, so it pays to check conditions before setting out. Footwear with grip helps on wet rock, and a torch is worth packing, since cave interiors stay dim even on bright days. Locals tend to time visits for a low, calm sea, and know that ratings for natural spots often say as much about the weather that day as the place itself. Leave everything as found; formations like these are easily damaged.
Tucked between the beach and the river mouth, it makes a natural add-on to a Cobden beach walk, just a few minutes from Greymouth over the bridge.