The West Church, referred to by Gough as the “Church of the Evangelists,” is the largest of all the churches in the monastery, with an overall measurement of 36 by 16 m (118 by 52.5 ft).
The church has a basilica form with three rows - a central nave and two side aisles.
It was built after the cave church, but before the East Church.
It is the least preserved of all three churches and early visitors to the site did not identify it as a church, but as a gateway to the site.
 According to Gough, the provision of two pastophories proves that it was a church, and decorations found on its adorned gateway make reference to Evangelism, supporting Gough’s given name for the building.

Gough’s excavation discovered decorations of sculpted masonry and rich mosaics, which suggests that the church had wealthy patronage during its time.

The rugged terrain of the mountains meant that much of the cliff side had to be cut back during building.
Even then, the plan of the church was adapted to fit the lay of the land.
As a result, it doesn’t resemble the perfect east/west orientation that was typical of churches at the time.
The West Church, referred to by Gough as the “Church of the Evangelists,” is the largest of all the churches in the monastery, with an overall measurement of 36 by 16 m (118 by 52.5 ft). The church has a basilica form with three rows - a central nave and two side aisles. It was built after the cave church, but before the East Church. It is the least preserved of all three churches and early visitors to the site did not identify it as a church, but as a gateway to the site.  According to Gough, the provision of two pastophories proves that it was a church, and decorations found on its adorned gateway make reference to Evangelism, supporting Gough’s given name for the building. 
Gough’s excavation discovered decorations of sculpted masonry and rich mosaics, which suggests that the church had wealthy patronage during its time.
The rugged terrain of the mountains meant that much of the cliff side had to be cut back during building. Even then, the plan of the church was adapted to fit the lay of the land. As a result, it doesn’t resemble the perfect east/west orientation that was typical of churches at the time.
Alahan Monastery