Since the time of Constantine, Christians had gone on pilgrimages to the Holy Land. Even though Moslems had ruled Jerusalem since 638, Christians were still allowed to visit the city. By the 11th century, however, the situation had changed. Just as the number and frequency of pilgrimages to Jerusalem was at new peaks, the Seljuk Turks took over control of Jerusalem and prevented pilgrimages.
SSCLE is an organization of scholars interested in studying and understanding the crusade movement along with its effects on society then, and afterward.