The reflection of the early morning light created the illusion that the water was blood, perhaps because the soil in the freshly made ditches contained red clay.
Agrajā rīta stundā saules gaisma atstarojās, radot ilūziju, ka ūdeņi ir asinis, iespējams, tāpēc, ka augsne tikko izraktajos grāvjos saturēja sarkanu mālu.