People and the bridge which connects to the Temple Mount at the Western Wall Plaza - the tour of the tunnel starts from the opposite side of the bridge

People and the bridge which connects to the Temple Mount at the Western Wall Plaza - the tour of the tunnel starts from the opposite side of the bridge

A small section of the wall below can be seen from the ground - some visitors threw coins for good luck

A small section of the wall below can be seen from the ground - some visitors threw coins for good luck

A sign in Hebrew and English requests visitors to dress properly because they were entering a holy site - the gate to the tunnel is on left side

A sign in Hebrew and English requests visitors to dress properly because they were entering a holy site - the gate to the tunnel is on left side

Inside the tunnel on a platform - looking downwards at the wall and walking area

Inside the tunnel on a platform - looking downwards at the wall and walking area

One of the support arches of the bridges which were built to connect to the Temple Mount in the past

One of the support arches of the bridges which were built to connect to the Temple Mount in the past

Stone blocks of the wall - open air Western Wall is around 60 metres long, the tunnels shows another 485 metres

Stone blocks of the wall - open air Western Wall is around 60 metres long, the tunnels shows another 485 metres

The Western Stone is the biggest stone of the wall - it weighs around 517 tonnes

The Western Stone is the biggest stone of the wall - it weighs around 517 tonnes

The stone is 13.6 meters long and 3 metres high and has an estimated width of 3.3 meters

The stone is 13.6 meters long and 3 metres high and has an estimated width of 3.3 meters

This sign informed the visitors that they were standing closest to the Holy of the Holies at that point - few people are allowed to pray here

This sign informed the visitors that they were standing closest to the Holy of the Holies at that point - few people are allowed to pray here

This plaque dedicates the renovation of the wall to two names on it

This plaque dedicates the renovation of the wall to two names on it

Some of the people in the group - this tunnel can only be visited in a guided group

Some of the people in the group - this tunnel can only be visited in a guided group

Part of the old ceiling which goes back to the Herod era - he expanded the Temple Mount area in 19BC

Part of the old ceiling which goes back to the Herod era - he expanded the Temple Mount area in 19BC

A lamp at the closest part of the Holy of the Holies - British researcher Charles Wilson began the excavations in 1864 and was followed by Charles Warren in 1867-70

A lamp at the closest part of the Holy of the Holies - British researcher Charles Wilson began the excavations in 1864 and was followed by Charles Warren in 1867-70

An arch of another bridge - these bridges were built in line with the Temple Mount wall because the area below those bridges was much lower than the Temple Mount

An arch of another bridge - these bridges were built in line with the Temple Mount wall because the area below those bridges was much lower than the Temple Mount

Above this area were the residential neighborhoods that had been constructed on ancient structures from the Second Temple period and were built up against the Western Wall

Above this area were the residential neighborhoods that had been constructed on ancient structures from the Second Temple period and were built up against the Western Wall

An unfinished stone inside the tunnel - one theory suggests that workers stopped working because they were not getting paid when Herod died

An unfinished stone inside the tunnel - one theory suggests that workers stopped working because they were not getting paid when Herod died

This photo shows how Temple Mount had looked in the past

This photo shows how Temple Mount had looked in the past

These two columns are from the Herodian period - it is believed that they were part of the colonnade

These two columns are from the Herodian period - it is believed that they were part of the colonnade

Narrow passage of the Western Wall tunnel - the Second Temple was destroyed by the Romans in 70AD thus burying this wall underground

Narrow passage of the Western Wall tunnel - the Second Temple was destroyed by the Romans in 70AD thus burying this wall underground

Looking at the ceiling of the tunnel

Looking at the ceiling of the tunnel

Left side of the wall in the tunnel - some of the construction were added in the Muslim era

Left side of the wall in the tunnel - some of the construction were added in the Muslim era

The Struthion Pool an open-air pool but Herod added arch vaulting so it was covered underneath it

The Struthion Pool an open-air pool but Herod added arch vaulting so it was covered underneath it

One woman in group asked the guide if the water in the pool was from Herod's era as well (19BC) - you guessed it

One woman in group asked the guide if the water in the pool was from Herod's era as well (19BC) - you guessed it

Now walking back from the Struthion Pool into the narrow passage once again -  a security was following each group to make sure everything went smoothly

Now walking back from the Struthion Pool into the narrow passage once again - a security was following each group to make sure everything went smoothly

Tunnel on the Northern exit - this exit was created in 1996 after destroying the parts of the Muslim Quarter which led to unrest and killing of 80 people

Tunnel on the Northern exit - this exit was created in 1996 after destroying the parts of the Muslim Quarter which led to unrest and killing of 80 people

At the end of the Northern Exit, there were few offices - this one belonged to the Western Wall Rabbi

At the end of the Northern Exit, there were few offices - this one belonged to the Western Wall Rabbi

A huge and impressive looking Mamluk hall brings visitors to the end of the visit and then to the ground level

A huge and impressive looking Mamluk hall brings visitors to the end of the visit and then to the ground level