The sky above Yellowstone

In the clear air of the high altitude country of Yellowstone National park cloudscapes compete with the displays of geysers and hot springs. Where to look? Up, down, everywhere?

The sky above Yellowstone
Alien spaceships? (Altocumulus lenticularis)
The sky above Yellowstone
Cirrus above the steam of Grotto Geyser
The sky above Yellowstone
Cumulus humilis above Lower Falls of the Yellowstone River
The sky above Yellowstone
The sky's glorious light caught in the Lower Falls of the Yellowstone River
The sky above Yellowstone
Cumuli above erupting Tower Geyser
The sky above Yellowstone
Altocumulus above Old Faithful Geyser (not erupting)
The sky above Yellowstone
Altocumulus lenticularis behind Daisy Geyser
The sky above Yellowstone
Stratocumulus at sunset; Castle Geyser in «steam phase»