Use left pairs for crossed vision; use right pairs for straight vision.
Use top pairs for crossed vision; use bottom pairs for straight vision.
| R |
| R |
| L |
Entrance to glacier ice cave in mouth of Ellsworth Glacier at Day Harbor.
| R |
| L |
| L |
| R |
Upper part of glacier ice cave in avalanche chute at Byron Valley near Portage.
| R |
| L |
| L |
| R |
Arch in limestone along Iron Creek north of Nome on Seward Peninsula.
| R |
| L |
| L |
| R |
Entrance to lava tube cave at Bogoslof Hill on St Paul of Pribilof Islands.