Dhamma and dhammā are not the same, Dhamma as in Buddha Dhamma is the Buddha’s doctrine could not be subject to change. But dhammā are rūpa or energy are subjected to change which is a saṅkhata.
For information on Mount Meru (which is Mount Kailash), please read the following pages:
Can you explain the “Maha Meru”?
Mount Kailash