meters and an external width of 8.1 meters (width of the front). The
church gate is opened in the south wall of the nave, with a porch.
Built along the nave, the tower rises south. Plan by Marie Lebert.

[Illustration]

090. Saint-Jean-le-Thomas. The church front and the tower. The wall of
the church front is topped with a small glacis covered with schist
plates, behind which rises the gable wall. In the middle of the front,
a flat buttress ends with a glacis at the base of the gable wall. The
two small Romanesque bays on both sides of the buttress were reopened
in 1973, during the restoration of the church choir. The massive tower
was rebuilt in 1895. Photo by Alain Dermigny. [Alain-044]

[Illustration]

091. Saint-Jean-le-Thomas. The pre-Romanesque choir and its south wall.
The choir has similarities with the church Notre-Dame-sous-Terre,
present in the innards of Mont Saint-Michel and built by the
Benedictines shortly after settling down on the Mont in 966. In both
buildings, the bay centerings are made of brick quoins, and walls are
made of fairly regular small blocks of granite joined with a thick
mortar. Photo by Alain Dermigny. [Alain-045]

[Illustration]

092. Saint-Jean-le-Thomas. The pre-Romanesque choir. On the left of the
large central bay, a small Romanesque bay is clearly visible, with its
centering and abutements in granite. Photo by Claude Rayon [Claude-31]

[Illustration]

093. Saint-Jean-le-Thomas. The pre-Romanesque choir and its north wall.
High in the wall, the centerings of the pre-Romanesque bays are made of
brick quoins. The large semi-circular bay with a trefoil arch was
pierced in 1895, when the tower was rebuilt. The pre-Romanesque bays
were discovered and reopened during the restoration of the choir in
1965 by Yves-Marie Froidevaux, a chief architect at the (French)
Historic Monuments. Photo by Alain Dermigny. [Alain-046]

[Illustration]

094. Saint-Jean-le-Thomas. The pre-Romanesque choir and its north wall.
The masonry is made of fairly regular small blocks of granite joined
with a thick mortar. Photo by Alain Dermigny. [Alain-047]

[Illustration]

095. Saint-Jean-le-Thomas. The pre-Romanesque choir. The centering of
this small pre-Romanesque bay is made with brick quoins. The same bays
are present in the church Notre-Dame-sous-Terre, built around the same
time in the innards of Mont Saint-Michel. Photo by Claude Rayon.
[Claude-30]

[Illustratio