  We study the height of the maximal particle at time $t$ of a one dimensional
branching Brownian motion with a space-dependent branching rate. The branching
rate is set to zero in finitely many intervals (obstacles) of order $t$. We
obtain almost sure asymptotics of the first order of the maximum, describe the
path of a particle reaching this height and describe its dependence on the size
and location of the obstacles.
