You're welcome kak Hive account@cicisaja. I'm glad if you like my post. in the future I will share about other things about the gravestone of aceh. to answer the questions you asked about the tsunami in the lamreh area.
this is the answer, there are some areas with low topography exposed to tsunami while graveston that located in the highlands only affected by the earthquake.
because in the past if kings and ulama died, they were buried in the highlands. to glorify and honor their spirits.