The Nabi Musa festival was an important weeklong festival in Palestine between the Friday before Orthodox Good Friday and Orthodox Holy Thursday

Photo c. 1900-1920, Matson Collection via @librarycongress
http://www.loc.gov/pictures/item/mpc2004001124/PP/

Nabi Musa is a traditional shrine or tomb of Moses (Nabi Musa = "the prophet Moses") located near Jericho.

The Nabi Musa festival was the main saint's festival for the entire region, from Jerusalem to Hebron.

photo by Robertson and Beato, March 1857
http://dla.library.upenn.edu/dla/holyland/detail.html?id=HOLYLAND_lenkin_3213

Tawfiq Canaan provides a detailed description of the Nabi Musa festival in Mohammedan Saints and Sanctuaries in Palestine (1927)

One of the highlights of the Nabi Musa festival was the procession from Jerusalem to the shrine on Sunday (= Orthodox Palm Sunday)

Photos from Matson Collection via @librarycongress: 1918, c. 1900-1920, and 1937
http://www.loc.gov/pictures/search/?q=nebi+musa

Canaan illustrates finials from the flagpoles at the Nabi Musa festival

Finials and flagpoles in the Nabi Musa procession and festival

Photos from Matson Collection via @librarycongress: 1917, 1918, and 1937
http://www.loc.gov/pictures/search/?q=nebi+musa

Drum and cymbal players at the Nebi Musa festival, 1937

Photo from Matson Collection via @librarycongress
http://www.loc.gov/pictures/item/mpc2010002469/PP/

Nabi Musa among the hills of the southern West Bank, 1976
https://www.gettyimages.com/license/613158494

Nabi Musa: Foundation inscription of Baybars, 668 AH/1269-70 CE, next to the entrance to the tomb itself. https://www.gettyimages.com/license/524336008

Nabi Musa cenotaph
Photograph by Ross Burns via @ManarAlAthar
http://www.manar-al-athar.ox.ac.uk/dams/pages/view.php?ref=48563

There have been efforts to restart the Nabi Musa festival in recent years, with funding from Turkey's state-run aid agency
https://aa.com.tr/en/middle-east/10-years-of-turkish-aid-in-palestine/1007113

photo from 2016
https://www.gettyimages.com/license/519809946

There were also plans last year to renovate the buildings around the tomb, though I haven't heard anything recently
http://archive.halaltimes.com/palestinian-government-hopes-ancient-shrine-can-lure-in-tourists/

https://www.gettyimages.com/license/519810258

Nabi Musa week/Orthodox Holy Week is a period for many other festivals

(Canaan 1927)

Wednesday of Nabi Musa week was the festival of al-Husayn (Husayn ibn Ali, grandson of Muhammad), at his shrine near ancient Ashkelon.
This was one of the most important festivals of the southern coastal plain.

(photo from Matson Collection, 1943)
http://www.loc.gov/pictures/resource/matpc.21687/

The shrine was built in the 11th century, and was believed to have once held Husayn's head before it was removed to Egypt.
http://asorblog.org/2014/03/10/husseins-head-and-importance-of-cultural-heritage/

The procession headed from the nearby town of Majdal, 3 km inland, to the shrine overlooking the sea, by the walls of ancient Ashkelon

photos from Matson Collection, 1943
http://www.loc.gov/pictures/search/?q=mejdal

In the courtyard of the shrine of Husayn, 1943

photo from Matson Collection via @librarycongress
http://www.loc.gov/pictures/item/mpc2010007169/PP/

Wednesday of Nabi Musa week was also Job's Wednesday (Arba'at Ayyub), celebrated throughout the coastal regions.
Job was popularly connected with healing waters, stemming ultimately from Job and the spring in the Qur'an (38:42)
https://commons.wikimedia.org/wiki/File:Job_the_prophet.jpg

On the southern coast of Palestine, Job's Wednesday was celebrated at the beach within the site of ancient Ashkelon (at this time farmland of the neighboring village of Jura)

Matson Collection, 1943
http://www.loc.gov/pictures/item/mpc2010007154/PP/

Animals suffering from a skin disease (as Job did) would be bathed in the sea here (according to Canaan)

photos from Matson Collection, 1943
http://www.loc.gov/pictures/search/?q=mejdal

These photos are especially touching for me -- because in a few years all of this stopped and these people were never allowed back; and because I lived right near here for 3 years and used to work at this very spot.

At Wadi al-Naml, Ashkelon, 1943
http://www.loc.gov/pictures/item/mpc2010007153/PP/

We end Nabi Musa week with Muntar's Thursday: a festival at the shrine of Ali al-Muntar on the hill east of Gaza

Procession going up Jebel Muntar (the hill of Muntar), 1943
photo from Matson Collection
http://www.loc.gov/pictures/item/mpc2010007175/PP/

View of Gaza from Jabal Muntar during Muntar's Thursday, 1943

photo from Matson Collection via @librarycongress
http://www.loc.gov/pictures/item/mpc2010007177/PP/