  The first high-resolution (5 mas) VLBI observations of 6.7-GHz methanol
masers in DR21(OH)N, a candidate circumstellar disc around a very young massive
star, are presented. Previous observations of these masers at 50 mas angular
resolution revealed a rotating structure at the position of a candidate massive
protostar, with a well-sampled position-velocity diagram suggesting Keplerian
rotation. Observations presented here using the European VLBI Network (EVN)
have provided the first high angular resolution maps of the masers, providing a
test for the disc hypothesis and the Gaussian centroiding technique. The EVN
maps have confirmed the shape of the disc and its rotation curve. Weaker maser
emission seen previously with MERLIN between the two main spectral peaks is
seen in the EVN total power spectrum, but is absent in the cross-power
spectrum. This suggests that the spatially extended emission is resolved out by
the EVN. The rotating disc is coincident with a Class I massive (proto)star and
at the implied centre of an outflow traced by two bow shocks. We discuss the
impact of this result on the massive stellar accretion disc hypothesis and on
the validity of the centroiding technique to determine the structures of
unresolved masers using compact radio interferometric arrays.
