The Uffington White Horse geoglyph as sun-horse .

DOI: doi.org/10.15184/aqy.2016.269

Josh Pollard has an interesting paper in the most recent “Antiquity ” . An original suggestion , afaiaa , that the geoglyph is a symbol related to the Trundholm sun horse and associated motifs found on Scandinavian razors and rock art .

Flemming Kaul has been the main instigator in suggesting that the symbol(s) are derived from Indo -European myth and represent the sun on it’s daily journey from east to west , whilst a boat or chariot takes it on the underworld return west to east journey .
In this case the horse is heading just west of south .
There are problems with the Kaul suggestion but it still has adherents since his initial “Ships on Bronzes ” nearly 20 years ago .