The convent is seated on a delightful plain, backed with an immense wall of perpendicular rocks, covered with plants; the ceiba and palms show their gigantic and elegant forms, numberless springs gush out on every side, and it is difficult to imagine a more picturesque spot than that which these priests have chosen. The cultivation of the valley adds to the natural beauty of the scene, as the gardens of the Indians are filled with plantains, papaws, and all the fruit-bearing plants common to the tropical regions. The conuco or common plantation contains maize, the sugar cane, culinary plants, and coffee trees. Near this valley is the cavern of the Guacharo, three leagues from the convent towards the west. This cave gives its name to the range of mountains in which it is situated. The cavern is pierced in the face of the perpendicular side of the lofty Guacharo mountain, the access to its mouth being rather difficult, on account of the numerous little torrents which cross the valley. Its entrance is towards the south, and forms an arch eighty feet broad, and seventy-two high, surmounted with rocks, covered by gigantic trees; festoons of creeping plants throw themselves across the chasm, and variegate the scene with the beautiful and vivid tints of their flowers; a river issues from the vault which continues at the same height as at its entrance for a considerable distance; and arums, heliconias and palms, follow the banks of the stream for thirty or forty paces into the interior. It is not necessary to use torches for 430 feet from the mouth, as the grotto keeps the same direction, and forms but one channel from south-east to north-west; when the day-light fails, the hollow murmuring sound of a vast number of nocturnal birds, inhabiting the recesses of the cave, may be distinguished; advancing further by the help of lights the whole rock is seen covered with the nests of these birds, which are called Guacharoes, and are of the size of a fowl, with a crooked bill, feathers of a dark bluish grey, mixed with specks of black, the head, wings and tail, being studded with large white heart-shaped spots edged with black; the spread of the wings is three feet and a half; its eye, which is blue and small, cannot endure the light of day, these birds quitting the cavern only at night in search of the fruits on which they exist; their nests are seen by fixing a torch at the end of a pole, and are generally on the very highest parts of the arch.