Translations for clamber in French

Here are paragraphs from public domain books translated:

The base of the cliff was heaped with loose stones at the spot, and it was not difficult to clamber up. When we reached it, all doubt was removed. Not only was it an opening into the rock, but on the side of it there was marked once again the sign of the arrow. Here was the point, and this the means by which Maple White and his ill-fated comrade had made their ascent.	Il nous suffit, pour nous en assurer, de grimper par-dessus les blocs de pierres qui s’amoncelaient contre le mur. Non seulement il y avait une ouverture dans la roche, mais sur l’un des côtés de cette ouverture il y avait encore une flèche. C’était là le point, c’était le chemin d’ascension choisi par Maple White et son infortuné camarade.
The Lost World, by Arthur Conan Doyle	Le Monde perdu, de Arthur Conan Doyle