Bison in Winter by Castle Geyser
$100.00 – $1,500.00
Bison that have committed themselves to wintering in the Upper Geyser Basin
follow a daily pattern of movement. At night they sleep on patches of ground
that are geothermally heated; during the day they move about to feed on
whatever meager forage they can find. Castle Geyser is erupting in the
background as this small bunch travels towards a feeding area.