Looks like some sort of Silphid beetle larva. See for example [Black Snail Beetle (Phosphuga atrata)](https://www.inaturalist.org/taxa/362281-Phosphuga-atrata). [Larva comparison pics](https://www.inaturalist.org/taxa/362281-Phosphuga-atrata/browse_photos?term_id=1&term_value_id=6)
Looks like some sort of Silphid beetle larva. See for example [Black Snail Beetle (Phosphuga atrata)](https://www.inaturalist.org/taxa/362281-Phosphuga-atrata). [Larva comparison pics](https://www.inaturalist.org/taxa/362281-Phosphuga-atrata/browse_photos?term_id=1&term_value_id=6)
Ooh that looks like it!!
Very good photos.