Researchers say technology may have solved a mystery about markings at Jerusalem's Church of the Holy Sepulchre. The special markings are thousands of crosses carved into the walls of the church, which is one of Christianity's (holy) places. As one of the world's Christian religious centers, it (think) that the markings were graffiti created by religious travelers, most of visited the church in the past. But imaging technology suggests that they were likely part of a more (organize) effort.
Researchers used three-dimensional (3D) imaging technology to find out old the markings are. The process showed that the crosses may date the 15th century. Examinations of the images showed the (deep) and details of the markings were very similar, (suggest) that only a few people had carved the crosses. It suggests that pilgrims（朝圣者）visiting the church probably paid artists to create the crosses in their name. More research is to be carried out on the markings in an effort (confirm) the latest findings. The new research can help the church to attract more visitors, (especial) as it struggles with covid-19 restrictions.
