Tourists on the Nile who are traveling by a cruiser have to go through this lock. At times the waiting times can be several hours as there is a queue.
Here is a picture of the approach to the Esna Lock. In the background you can see that the water level of the river on the other side is much higher.
Here is a clearer picture of the difference in water levels, seen as you enter the chamber where the water level can rise and fall. The photograph is taken from the top of the cruise liner.
After the water level is raised the gates on the other side are opened.
And the boat goes through to the other side.
You might also like to see photographs of the magnificent River Nile or the Edfu Temple in Egypt or other photographs from Egypt like Fishing at Esna Lock or Nubian Village of Egypt
Or see all the photos of Egypt including that of important monuments like the Pyramids and other temples.