Start in town
Tell the driver clearly that Richhang Waterfall is the destination and ask what point the vehicle can currently reach.
A road approach followed by a real walk
A nature outing in the Khagrachari area where the last part of the journey matters as much as the drive. Plan for uneven ground, changing water and trail conditions, and enough time to return without rushing.

Step-by-step route logic
Online distance, fare and timing references become stale. Use this sequence to ask the right questions, then confirm the exact road approach, drop point and return arrangement locally on your travel date.
Tell the driver clearly that Richhang Waterfall is the destination and ask what point the vehicle can currently reach.
Confirm the vehicle type, total fare, waiting arrangement and whether the return is included before leaving.
At the access point, use current local direction. Do not rely on an old pin when paths, signs or surfaces may have changed.
Set a turnaround time, keep daylight and weather in mind, and make sure your driver or pickup plan is still clear.
Ask the operator or driver to repeat the agreed pickup, drop, wait and return terms. Prices and access are intentionally not quoted here because they are volatile and were not supplied as current verified facts.
Practical guide
Waterfall routes can be more demanding than a photograph suggests. Make the decision around your group, not around a fixed list.
Do not treat wet rock, fast water or steep edges as a photo platform. Follow on-site restrictions and current local advice, especially after rain.
Carry waste back, keep noise low, avoid damaging plants, and ask before photographing people or homes along the route.