The image probably is related with the battle of Jericho? My original guess was a music festival but I think its just a generic poster like the other biblical themed works he has created....I am still hopeful its a marijuana festival with some big nugs.
I found the printhouse and the artist is Harry Araten
https://m.flickr.com/#/photos/yaronimus/4781323177/in/set-72157624342712859/According to the Book of Joshua, the Battle of Jericho was the first battle of the Israelites in their conquest of Canaan. According to Joshua 6:1-27,
the walls of Jericho fell after Joshua's Israelite army marched around the city blowing their trumpets. Excavations at Tell es-Sultan, the biblical Jericho, have failed to produce data to substantiate the biblical story,[2] and scholars are virtually unanimous that the Book of Joshua holds little of historical value.[3]