JPNN.com, MALANG - Gunung Semeru di perbatasan Kabupaten Lumajang dan Malang, Jawa Timur kembali erupsi dengan tinggi letusan 700 meter di atas puncak, atau 4.376 meter di atas permukaan laut (mdpl) pada Rabu malam.
The main conceptual idea of the text is:
Mount Semeru has erupted, prompting authorities to warn the public about potential dangers from volcanic rocks (boulder ejecta).
The text emphasizes the need for people to be vigilant and take precautions due to the eruption.