Sion lies midway along the upper Rhône Valley, an east‑west trench gouged by repeated Pleistocene glaciers and now flanked by the Pennine and Bernese Alps. The settlement area sits on the alluvial fan of the Sionne torrent, a cone of well‑sorted sands and gravels that projects onto the wider Rhône flood‑plain.
Category: Enclosure
Dryburn Henge, Cumbria
Dryburn Henge lies on Alston Moor in Cumbria, within the North Pennines Area of Outstanding Natural Beauty. It occupies a strategic nodal point on the high moor, roughly at NY 760 430, where routes across the Pennine watershed converge. The surrounding terrain is underlain by Carboniferous Great Scar Limestone and interbedded Yoredale shales, with scattered fluvioglacial gravels in valley bottoms.
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