Page:Mexico, Aztec, Spanish and Republican, Vol 1.djvu/417

Rh main road, and skirting it to San Agustin, extended high upon the mountain slopes still further west near San Angel and Contreras, whose neighboring fields were cut into deep ravines and barrancas by the wash from the declivities. The Pedregal was a most formidable obstacle in the march or manœuvres of an army. But few levels of arable land were found among its rocky wastes. It admitted the passage of troops at but few points, and was entirely impracticable for cavalry or artillery, except by a single mule-path. North of San Angel and the edge of the Pedregal, at the distance of about four miles, rose the solitary hill and castle of Chapultepec, which had been amply prepared for defence; and still further north on the same line, frowned the stern ridges of the sierra, cut by barrancas and profound dells, until the ring of the outer series of military works was thus finally united at the pass beyond Tenepantla. But inside of this formidable barrier of outworks, nearer the city, another line of fortifications had been prepared to dispute the American march. The first, and perhaps the most important of these, was at Churubusco, a scattered village lying midway between San Agustin and the city of Mexico, directly on the road, at a spot where the stream or rivulet of Churubusco runs eastwardly from a point on the road from San Angel to the capital, towards the lake of Xochimilco. The sides of the water course were planted with the prickly maguey, and one of the most western buildings in the village was a strong massive stone convent, whose walls had been cut for musketry, and whose parapets, azotéas or flat roofs, and windows, all afforded suitable positions for soldiery. Large quantities of ammunition were stored within the edifice. The enclosure of the church and convent was defended by about two thousand men, and mounted seven guns, while, towards the east was a beautiful, solid and scientifically constructed tête de pont which covered the bridge over the stream by which the road led to the capital. In this work three heavy guns were mounted, while the neighborhood is said to have swarmed with troops.

We have already mentioned the garita or gate of San Lazaro, which was the entrance to the city by the main road from the east, passing the hill and fortification of El Peñon. This garita was strengthened by strong works on the road, with platforms and embrasures for heavy cannon, which would have swept the path, while the marshes on the south were protected by redoubts and lunettes extending to the garita or entrance of La Candelaria on the canal