Nagaon, March 9: Take a trip back in time and a sneak peek into some priceless vignettes of undivided Assam with a short sojourn in hilly Haflong.

Tomorrow, 350 rare pictures dating back to the early and mid-twentieth centuries will be showcased in a two-day exhibition - Kaleidoscope 2015 - in the headquarters town of Dima Hasao district.

Visual Arts and Creative Society, a Haflong-based organisation, has taken an initiative for the first time to exhibit the rare pictures.

The exhibition will showcase the history of the two hill districts, Dima Hasao and Karbi Anglong, and also that of the state.

Haflong is around 300km from Guwahati.

Of the collection, 110 pictures - most of which were taken between 1940 and 1970 - shed light on some historical moments related to politics and the natural beauty of the two hill districts.

The photographs include those of Assam Assembly members of 1952, leaders of indigenous communities visiting the then President Rajendra Prasad and Prime Minister Jawaharlal Nehru to discuss the Sixth Schedule.

There are prints of the archaic ferry service on the Dehangi river, the natural beauty of Haflong town before Independence and much more.

The exhibition will be held at the Haflong cultural institute hall. The local autonomous council's cultural centre has lent support to the programme.

The organisation has collected most of the politically significant photographs from the residence of J.B. Hagjer, Haflong's first legislator.

"All of them are black-and-white pictures and well-preserved," said the convener of the Visual Arts and Creative Society, Delai-dau Daolagupu.

According to Daulagupu, a stranger (believed to be from the UK) took several photographs of the beautiful landscapes of Haflong town, neighbouring Borail hill range and the evening splendour of Haflong lake.

"We collected these pictures and preserved them scientifically to avoid deterioration in quality. The collections will surely attract many to the exhibition," Daolagupu said.

The two hill districts of Assam had contributed significantly to India's freedom struggle.

In the post-Independence era, some significant issues such as Sixth Schedule status for autonomous district councils, bifurcation of North Cachar Hills (now Dima Hasao) from the then Mikir Hills (present Karbi Anglong) and the struggle for an autonomous state that gave birth to some unforgettable episodes in the history of the hill districts.

"The two-day programme may bring to light several episodes from the untold history of Dima Hasao. Our aim is showcase the glory of Dima Hasao before the world and this is a part of that initiative," the society's senior executive, Rajdeep Kemprai, said.