COMMENT The tragedy and disaster at Bertam Valley, Cameron Highlands, should be an eyeopener for Malaysians who have allowed the government to push through one mega dam after another, especially in Sarawak.

Tenaga Nasional Bhd (TNB) operates a relatively small hydroelectric plant of only 100MW at the dam in Ringlet and we have already seen the consequences of lax maintenance and regulation, which led to sedimentation caused by unregulated "development" around the dam.