The height of his enthusiasm for natural beauty was reached during his stay on Monte Amiata, in the summer of 1462, when plague and heat made the lowlands uninhabitable. Half-way up the mountain, in the old Lombard monastery of San Salvatore, he and his court took up their quarters. There, between the chestnuts which clothe the steep declivity, the eye may wander over all Southern Tuscany, with the towers of Siena in the distance. The ascent of the highest peak he left to his companions, who were joined by the Venetian envoy; they found at the top two vast blocks of stone one upon the other - perhaps the sacrificial altar of a prehistoric people - and fancied that in the far distance they saw Corsica and Sardinia rising above the sea. In the cool air of the hills, among the old oaks and chestnuts, on the green meadows where there were no thorns to wound the feet, and no snakes or insects to hurt or to annoy, the Pope passed days of unclouded happiness. For the 'Segnatura,' which took place on certain days of the week, he selected on each occasion some new shady retreat 'novos in convallibus fontes et novas inveniens umbras, quae dubiam facerent electionem.' At such times the dogs would perhaps start a great stag from his lair, who, after defending himself a while with hoofs and antlers, would fly at last up the mountain. In the evening the Pope was accustomed to sit before the monastery on the spot from which the whole valley of the Paglia was visible, holding lively conversations with the cardinals. The courtiers, who ventured down from the heights on their hunting expeditions, found the heat below intolerable, and the scorched plains like a very hell, while the monastery, with its cool, shady woods, seemed like an abode of the blessed.