Le 25 novembre 2023
Découverte d’un des vallons obscurs situés près de Nice rive gauche du Var, de rares canyons « secs » superbes pour leurs coups de sabre dans le conglomérat local et leur végétation humide et parfois subtropicale, avec notamment des parois couvertes de fougères rappelant l’ambiance des canyons des Antilles ou de Madère. Cet écosystème rare peut être traversé par une simple randonnée pédestre non technique par le fond du canyon, casque malgré tout conseillé, ainsi que pantalon long pour les nombreuses ronces trop affectueuses, et chaussures étanches ou de canyon pour les passages à gué dans les filets d’eau qui peuvent couler. C’est effectivement magnifique, sauvage et atypique à quelques kilomètres seulement de la métropole niçoise, une balade à ne pas rater dans des encaissements parfois très prononcés (moins de 2 mètres de large pour plus de cinquante mètres de hauteur) sublimés par du concrétionnement calcaire actif en méduses sous les résurgences des plafonds. Attention, certains de ces canyons secs sont officiellement interdits depuis juillet 2020, notamment celui du Donaréo.
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arbouses et feuillus encore verts à l'approche (descendante)
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le premier encaissement, ses méduses et fougères, ambiance (sub)tropicale
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un affluent rive gauche
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les parois couvertes de mousses et fougères avant le second encaissement
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le second encaissement et son ambiance spéléo
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au retour à contre-courant
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