of King Berengarius, from whence he long defied the arms of his eventually successful rival Otho the Great: of its protracted siege, however, in 962-3, no incidents worthy of credit have come down to us. Its circuit is estimated at two miles, and not the least peculiar of its phenomena is a spring of excellent water near the summit, sufficient perennially to supply the mills. The accompanying engraving, from a sketch taken on the spot, will best convey an idea of this remarkable site, but we may quote Sanzi's description of it, and of its surprise by Federigo.[70] "A city yonder stands, San Leo hight, Whose crest the sky menaces; 'gainst its strength No force has e'er prevailed, with scathed cliffs And rocks environed, heavenward uprearing Its summit, by a single path approached, Trod singly by the citizens. Earth holds None other deemed impregnable. To it the Count his daring aims addressed; And, knowing that a rock, which few to scale Would venture, jutted midway from the ridge, At midnight's murky hour the spot he gained, With few but agile comrades, well prepared With ladders; then alone and stealthily The outposts reconnoitred, slumbering all, Like men who knew no fears save from on high. Next scaling one by one that arduous rock, And reaching thence the level space beyond, The town his soldiers entered silently. Sudden uprose their cry, with clash of arms, And furious blows and crackling flame, the work Befitting, whilst the startled garrison, Knowing nor whence nor what the sounds, No struggle made, but rushed in desperation Or here or there, whilst others stood transfixed To find themselves befooled. Not more surprised Was he who gained the golden fleece, to see From the plough's furrow armed men spring forth, Than were these luckless denizens to find Their stronghold carried in the sudden fray." [Footnote 69: See UGOLINI, _op. cit._, pp. 4 and 5. S. Leo seems to have been called at one time Monteferetro. Cf. MARINI, _Saggio di ragioni della città di S. Leo_ (Pesaro, 1758), and MAZIO, _Relazione a Urbano VIII., dello stato d'Urbino_ (Roma, 1858).] [Footnote 70: Views of S. Leo, from other points, will be found in Mr. GALLY KNIGHT'S _Ecclesiastical Architecture of Italy_, and in COMTE DE BYLANDT'S _Atlas de Volcans_, where it is rendered subsidiary to the phenomena developed in that remarkable district.] [Illustration: _A. Nini, del. A. Marchetti, sculp._ SAN LEO AND MAIUOLO _From a drawing by Agostino Nini_]