  We report the detection of HI absorption towards the inner double of the
double-double radio galaxy (DDRG) J1247+6723 with the Giant Metrewave Radio
Telescope (GMRT). The inner double is a Giga-hertz peaked spectrum (GPS) source
with a linear size of 14 pc while the overall size defined by the outer double
is 1195 kpc, making it a giant radio source. The absorption profile is well
resolved and consists of a number of components on either side of the optical
systemic velocity. The neutral hydrogen column density is estimated to be
N(HI)=6.73*10^{20}(T_s/100)(f_c/1.0) cm^{-2}, where T_s and f_c are the spin
temperature and covering factor of the background source respectively. We
explore any correlation between the occurrence of HI absorption and
rejuvenation of radio activity and suggest that there could be a strong
relationship between them.
