I suppose being called Slop Bog is not exactly an enticing name but it does evoke curiosity surely? One thing is certain, when you visit you will find it is boggy!
From a nature perspective this is prime damp heath, sadly now a rare habitat. Much of its scientific interest lies deep in the wettest areas and so is not really accessible but an extensive board walk through part of it does enable you to get a flavour of what may it is like deep within the bog. Classic bog plants such as cotton grass, bog myrtle, bog asphodel, sundew and cross-leaved heath abound along with a variety of reeds and grasses. There is also some coniferous woodland.
Slop Bog has to be the best site I have ever visited for the silver-studded blue butterfly. In July this scarce species nationally is extremely common on the reserve and they fly up from under your feet as you walk. It is also a good site for dragonflies and damselflies but my only visit to date was probably just a shade early as my species list shows. I still managed to see a small red damselfly and golden-ringed dragonfly, both of which are uncommon to say the least.
On the downside, the A31 runs to the north of the site so the traffic noise is a constant companion but apart from that Slop Bog is not unpleasant as its name might suggest. Indeed quite the opposite, a very nice place to spend an hour or so nature watching.