This paper examines the question of whether there is an unbounded walk
of bounded step size along Gaussian primes. Percolation theory predic
ts that for a low enough density of random Gaussian integers no walk e
xists, which suggests that no such walk exists along prime numbers, si
nce they have arbitrarily small density over large enough regions. In
analogy with the Cramer conjecture, I construct a random model of Gaus
sian primes and show that an unbounded walk of step size k root log\z\
at z exists with probability 1 if k > root 2 pi lambda(c), and does n
ot exist with probability 1 if k < root 2 pi lambda(c), where lambda(c
) approximate to 0.35 is a constant in continuum percolation, and so c
onjecture that the critical step size for Gaussian primes is also root
2 pi lambda(c)log\z\.