Nesrin the part is "i have seen a waterhole,well or oasis" (it can also be source as you put it, but it reffers to water b/c of the "Al ver sus aguas ir al mar" (seeing its water going to sea)
Nesrin the part is "i have seen a waterhole,well or oasis" (it can also be source as you put it, but it reffers to water b/c of the "Al ver sus aguas ir al mar" (seeing its water going to sea)