Answer : 1. "चम्बल"
Explanation :

1. Chambal river is infamous for its 'badland'.

2. Elevated land with uneven surfaces located in semi-arid regions, on which sudden heavy rainfall causes rows of deep gullies to form and the entire land becomes rugged. Due to differential erosion, hard and resistant rocks are visible in the form of tall pillars or high flat land above the adjacent land. This land is unsuitable for animal husbandry and agriculture.