The postcard shows the real Maria Cristina Falls (compared to M39: Maria Cristina Falls Postcard) in Iligan City, Lanao del Norte. The Maria Cristina Falls is a 98-m/321.5-ft plunge type of waterfall. The water descends vertically, losing contact with the bedrock surface. 
 M1130: Maria Cristina Falls Postcard
M1130: Maria Cristina Falls Postcard 
The back of the postcard reads:
Maria Cristina Falls, Iligan City, Lanao del Norte. This beautiful dynamic falls, harnessed, supplies electrical power for the different mechanical and industrial installations of the city.
RELATED ENTRY:
M39: Maria Cristina Falls Postcard