“The other church (or chapel) which King Alonso el Casto ordered to be built on the south side of the Iglesia Mayor (or cathedral), was with the advocation of the Glorious Archangel St. Michael. And in order that he might elevate it, he placed under it another church of the Virgin and Martyr St. Leocadia, somewhat low, and vaulted with a strong arch, to support the great weight which was to be laid upon it. The king’s motive for thus elevating this church of St. Michael, I believe certainly to have been because of the great humidity of that land. He had determined to place in this church the famous relics of which we shall presently speak, and the humidity of the region is so great, that even in summer the furniture of the houses on high ground is covered with mold. This religious prince therefore elevated the church with becoming foresight for reverence and better preservation of the precious treasure which was therein to be deposited. For this reason they call it Camara, (the chamber,) and for the many and great relics which it contains, it has most deservedly the appellation of Holy. You ascend to it by a flight of twenty-two steps, which begin in the cross of the Iglesia Mayor (or cathedral), and lead to a vaulted apartment twenty feet square, where there is an altar upon which mass is said; for within there is no altar, neither is mass said there by reason of the reverence shewn to so great a sanctuary; and it may be seen that K. D. Alonso intended in his plan that there should be no altar within. In this apartment or outer chapel is a great arched door, with a very strong fastening; it leads to another smaller square chamber, vaulted also, with a square door, which also is fastened with another strong fastening, and these are the fastenings and keys which the Bishop Sampyro admires for their strength and security.