Rob Woodall writes: John and Anne Nuttall give a height of 676m for the W top at SH817150. Carefully sightlining from E top past W top to Craig Cwm Amarch on Cadair Idris confirmed that the W top is 1m higher (actually 1.1m but that includes 100mm of heather!). The view from W past E top does indeed incline downwards. The OS 1:25000 map has 674m for W top, so I wonder what the authoritative heights are. Sadly it seems that RHB should shift the summit to the W top - although the E top is nicer. W top is about 30 metres north of the fence; short heather, small scruffy cairn which now boasts a sheep's skull.
Jeff Parr: There are now seven new Welsh Tops in the Nuttalls' list, none of which qualify as a Hewitt. However, the Maesglase summit has moved to the top Craig Rhiw-erch at 817150, which has been surveyed to be two metres higher than the previous recorded top. Further information at www.nuttalls.com