The so-called ''Complexo Húmedo de
Terra Chá'' comprises that part of the
high Miño basin which receives the
main tributaries from the right: the Ladra, with its tributaries, the Parga, the
Támoga and the Narla, as well as many other rivers like the Labrada, the Trimaz
and the Madalena.
As well as the flatness which gives rise to slow and winding courses outlined by
vegetation, the limited permeability of its clay soil leads to the formation of
pools. Some of these are temporary, depending on the rainfall, but others, like
the Cospeito and Caque lagoons, form two of the main lacustrine systems of
Galicia. Both lagoons are semi-natural, whose shape nowadays is due to
regeneration projects aimed at reversing the drainage attempts of past times.
The observation stations and circular walks combine easy accessibility with the
conservation of the fragile wetlands.
This is a landscape shaped by agricultural and cattle raising activities in which
there is still space for the conservation of many native forests. Oakwood’s, and
species associated with riverbanks, convert the slow flow of the waters into a
perfect mirror of the slow seasonal changes.