Explanation:

Researchers have found the evidence of a "lost" river that ran through the central Thar Desert, near Bikaner, as early as 172 thousand years ago, and may have been a life-line to human populations enabling them to inhabit the region.

• The findings represent the oldest directly dated phase of river activity at Nal Quarry in the central Thar Desert. The study indicates that Stone Age populations lived in a distinctly different Thar Desert landscape than we encounter today.
• This evidence indicates a river flowed with phases of activity dating to approximately up to 172 thousand years ago, nearby to Bikaner, Rajasthan, which is over 200 kilometres away from the nearest modern river.
• These findings predate evidence for activity in modern river courses across the Thar Desert as well as dried up course of the Ghaggar-Hakra River.
• The results indicated that the strongest river activity at Village of Nal occurred at approximately 172 and 140 thousand years ago, at a time when the monsoon was much weaker than today in the region. River activity continued at the site between 95 to 78 thousand years ago.
• The Thar Desert, also known as the Great Indian Desert, is a large arid region in the north-western part of the Indian subcontinent and forms a natural boundary between India and Pakistan.
• The Thar Desert extends between the Aravalli Hills in the north-east, the Great Rann of Kutch along the coast and the alluvial plains of the Indus River in the west and north-west.
• About 85% of the Thar Desert is located within India, with the remaining 15% in Pakistan. More than 60% of the desert lies in the Indian state of Rajasthan, and it extends into the states of Gujarat, Punjab and Haryana.
• Within Pakistan's Punjab province, the Thar continues as the Cholistan Desert.

Hence both statements are correct.