The igneous rocks of Moel Siabod can be seen behind the lakes which are linear but in the panorama appear to bend at the delta between the two.
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The river feeding the lakes is the Nantygwryd (or Nant-y-gwryd), which has its source at Llyn Cwm-y-ffynnon, also marked on maps as the Nant Gwryd, which is a tributary of the Afon Llugwy.
The inn wasn't built on the road (now the A5), but some distance from it on the present site to facilitate enjoyment of the superb view of Llynnau Mymbyr (the lakes) and the Snowdon horseshoe.
To the left is Llyn Cwmffynnon the source or head of the Nantygwryd river (originally Y Mymbyr), which flow into Llynnau Mymbyr at Capel Curig.