2. This is a silent film adaptation of Haggard’s novel from 1925 (the year of his death). You’ll have to adjust your sense of cinematic time to appreciate it. From 34:33 to 39:44 we get the reveal.
3. Look at this as well: a fantastic site devoted entirely to matte shots. This post illustrates some of the impressive visual effects found in the 1935 Merion C. Cooper production: