|
|
|
| White
sandstone from Belgium.
(Vallée du Hoyoux) |
|
| Sandstone
with micas from Belgium.
(Vallée du Hoyoux) |
|
| Dark
red sandstone from Belgium.
(Vallée du Hoyoux, Marchin) |
|
| Red
sandstone from Belgium.
(Vallée du Hoyoux) |
|
| Red
sandstone from Belgium.
(Huy) |