When forest officials here spotted a tiger in the Hadoti region, barely 40 km from the city, after a gap of 20 years, their joy knew no bounds.It gave them hope that their proposal to declare the region a national park and restore the famous breeding grounds of the big cat in Darrah Sanctuary would now go through. But the Mumbai-Delhi Rajdhani Express dealt a blow to that early this morning when it dashed through this area even as the tiger was crossing the tracks.