The Bedouin lance/spear is regarded as 'holy grail' by collectors of Arabian weapons in Israel. Yes, they were widespread in all the Middle East. The group photo with three people was taken south to Jerusalem - it is quite famous, I have a framed print. The horseman with the very long lance was photographed with the Jordan river behind him, Beit-She'an area.
The photo here is from a public collections, with firm references, 2ft long.

A little bit diferent than the others shown here.

on a historical note, these were in serious use at least until 1902:

Riyadh-Al-Bathaa-Masmak-Fortress...This was the citadel in the heart of Old Riyadh that King Abdul Aziz took in January 1902 to regain control of the city. During the raid one of the future king's companions heaved a spear at the door with such force that the head is still lodged in the doorway ... The fortress is built of dried mud. It is now used as a museum honouring Abdul Aziz.

i've seen it, sadly the tip broke off & remains in the door. the rest of the lance & head is elsewhere, didn't see it. i had no time to tour the fort as i had to pick up my re-entry visa for the UK & catch a plane back to dammam.

the fort & the door: spearpoint is just right of the X brace on the sally door inset in the main gate door itself. :