So far, all the estimates and costs of the alignment of the upcoming Cross Island MRT Line centre on an underground line ("$2b extra cost if MRT line skirts reserve"; Feb 22).

How about a feasibility study of an above-ground line along Lornie Road? Minimal land acquisition would be required.

With creative planning, the Cross Island Line might even provide passengers with a window to nature whenever it travels along Lornie Road.

Tan Lee Kheng (Ms)