In reply to Joe.mcf:
The nearest bouldering to Dingwall would be things like the Gold Dance boulders and Scatwell in Strathconon, about 15-20 mins drive. Check out the topos on www.scottishbloc.com, and the crag database here on UKC.
Both venues have a nice collection of problems across the low-mid grades. On a still day Scatwell could be getting a bit midgy at this time of year but Gold Dance catches more of a breeze.
There's also a scattering of new things around that area of Strathconon, on my Instagram as linked by Rob, but for a first time visitor I'd go for the venues I mentioned.