  We investigate the behaviour of the bosonic string on AdS3 with H-flux at
stringy scales, looking in particular for a `tensionless' limit in which there
are massless higher spin gauge fields. We do this by revisiting the physical
spectrum of the sl(2,R)$_k$ WZW model and considering the limit in which k
becomes small. At k=3 we find that there is an infinite stringy tower of
massless higher spin fields which are part of a continuum of light states. This
can be viewed as a novel tensionless limit, which appears to be distinct from
that inferred from the symmetric orbifold description of superstring AdS3
vacua.
