  We discuss an outside-inside scenario for a first order quark-hadron
transition in the Quark-Gluon Plasma (QGP) expected to be produced in heavy ion
collisions, wherein the entire QGP region itself becomes like a subcritical
bubble, and starts shrinking. We argue that this shrinking QGP bubble will lead
to concentration of baryon number in a narrow beam like region in center, which
can be detected by HBT analysis, or as a raised plateau in the rapidity plot of
baryon number.
