Snowfield
of the
Cretarolan hollow
The
snowfield is situated in the hollow of Cretarola, a gorge that from
the grasses of Cretarola (1440mt.) comes together as a tributary
combining with the bigger Angora grass, by connecting to the right
orographic side of it.
The Hollow of Cretarola,
at the end of the ice age, was probably a huge collector of all the
fusion waters of the Campo Imperatore's melting glaciers. Waters
that, once canalized in the Valianara's canyon, flowed first in the
Cretarolan grasses (giving rise to a lake, now filled in and no
longer present) and, finally, draining into the deep valley.
Currently, the ditch has an intermittent regime and is covered with
vegetation.
The
hollow looks like a canyon. There are some steep jumps and near them
we can recognize different and distinct snowfields.
The snowfields are almost
invisible, as they are covered by a thick stratus of beech leaves,
rocks and dirt, that preserve them from the heat, slowing down the
ablation and permitting its existence at such low altitude.
The
snowfields are situated at 1200-1300 mt. above sea level and they are
mainly sustained by avalanche events.
When
the snow covering the steep wooded slopes of the canyon reaches a
certain thickness that can no longer be maintained, the sheer weight
and effects of gravity produce avalanches that drain into the canyon
supplying the snowfields.
At
the moment, the dimensions of the snowfields have not been
measured.
It is estimated that they could be 6-7 mt. thick, with
a length of about 10 mt.
The snowfields could be perennial or
semi-perennial.
Fabrizio Sulli -
Alessandro Di Paola
The
artiche was kindly revised by dr. Massimo
Pecci
june 06