Translations for foreground in French

Here are paragraphs from public domain books translated:

The first impression which I received when I had recovered my breath was of the extraordinary view over the country which we had traversed. The whole Brazilian plain seemed to lie beneath us, extending away and away until it ended in dim blue mists upon the farthest sky-line. In the foreground was the long slope, strewn with rocks and dotted with tree-ferns; farther off in the middle distance, looking over the saddle-back hill, I could just see the yellow and green mass of bamboos through which we had passed; and then, gradually, the vegetation increased until it formed the huge forest which extended as far as the eyes could reach, and for a good two thousand miles beyond.

Le temps de reprendre haleine, et je regardai se dérouler, comme un extraordinaire panorama, le pays que nous venions de traverser. Toute la plaine brésilienne, allongée à nos pieds, ne rejoignait l’horizon que pour s’y perdre dans un brouillard bleuâtre. Au premier plan se dessinait la longue pente jonchée de rocs et tachetée de fougères arborescentes ; plus loin, à demi-distance, par-dessus le mamelon en dos d’une, je distinguais la masse jaune et verte des bambous ; puis la végétation, s’épaississant peu à peu, finissait par devenir l’immense forêt qui s’étendait à perte de vue jusqu’à des milliers de milles.

The Lost World, by Arthur Conan Doyle

Le Monde perdu, de Arthur Conan Doyle