Not many people would have seen this and its as unknown as obscure as they come. However, for one of the earliest cartoons I ever saw (in the 1960s!), it still remains etched in memory for some brilliant atmosphere and depth of drawing the viewer in.
You'd expect this to be some sort of tightass, cowboy, loud western showdown but it is actually something else. This cartoon is a very dark, scary, yes scary, look at the some of the locations and happenings in the wild west from a very different perspective. The use of long silence, atmospheric sounds, music and impactful characters and villains gives a very unique viewing experience.
The animation is as professionally done as they could afford in the 1960s but you can't really expect anything as high end as Tex Avery or MGM toons. The animation style is somewhat minimal and simple but they concentrate on atmosphere. A very notable episode was a "Whisperer" episode where Tanto and an entire town are traumatized by the scary, hypnotic sounds of what turns out to be, not a monster. Its really rare to see such stuff from earlier times. This cartoon may not be for everyone, but does have a psychological impact by very skilled use of content.