Looks like there are some minor landslide along the Simpang Pulai stretch. Whenever it rains, soil erosion occurs and when the ground becomes liquefied, it won't be able to hold the weight of the soil and landslide occurs.

Danger up high
Friday August 12, 2011

A bus passing through a stretch of the Simpang Pulai-
Cameron Highlands road. — Saiful Bahri / The Star

THE Perak Public Works Department is monitoring a stretch of the Simpang Pulai - Cameron Highlands road which has suffered from massive erosion.

Its director Datuk Dr Safry Kamal Ahmad said the department has deployed a team to inspect the stretch from KM23 to KM27.

On Sunday, seven people died in a landslide at an orang asli village in the highlands. -- The Star News