There has been no volcanism in historical times in Sinai or Arabia. In the 19th century, a volcano seemed like it would fit the bill, even though it would have to have been the longest-lasting large eruption ever, to guide by day and night from such a large distance. No one has ever found any such volcano.
“...Here is Jenkins’ report on the expedition. The findings of the two Davids include the first known photos taken inside lava tubes on the slopes of Jebel Qidr. It is supposed that Qidr erupted around 300 years ago, making its lava caves the youngest on the Arabian Peninsula.
http://www.saudicaves.com/djen01/index.html