Fenomena Singkapan Batupasir Kuarsa Talang Akar

New channel Stev. Nalendra: title sample judged 'pick' (Mostly genuine geology/coal-exploration lectures and workshops, but thesis defenses, discussion panels, and briefings sh); passed a second screen for sellers/exam-prep/re-uploads; 0 of 3 sampled transcripts showed teaching, 0 not; titles picked one by one, checked strictly; oEmbed verified.

A 10-minute video from Stev. Nalendra: “Fenomena Singkapan Batupasir Kuarsa Talang Akar”.

Video by Stev. Nalendra, played through YouTube's embedded player.