G Adventures has paused operations up to and including 5 February after demonstrations, road blockages and closures made it "impossible" to run trips as planned.
The operator is currently in the process of advising travellers on affected departures of the situation.
"We understand how disappointing this news will be, so we will be working with them to book their next adventure, and are offering either a full refund or future travel credit for fully paid passengers," a spokesperson told TTG.
