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For a Coxeter group $W$ we have an associating bi-linear form $B$ on suitablereal vector space. We assume that $B$ has the signature $(n-1,1)$ and all thebi-linear form associating rank $n' (\ge 3)$ Coxeter subgroups generated bysubsets of $S$ has the signature $(n',0)$ or $(n'-1,1)$. Under theseassumptions, we see that there exists the Cannon-Thurston map for $W$, that is,the $W$-equivariant continuous surjection from the Gromov boundary of $W$ tothe limit set of $W$. To see this we construct an isometric action of $W$ on anellipsoid with the Hilbert metric. As a consequence, we see that the limit setof $W$ coincides with the set of accumulation points of roots of $W$.

Cannon-Thurston maps for Coxeter groups with signature $(n-1,1)$