Diglett's Cave is a long but very simple tunnel connecting Vermilion City and the previously inaccessible side of Route 2, and follows on from Vermilion City Gym in your quest through Pokémon Let's Go's main story.
Below, we'll cover any and all of the obtainable Pokémon, item locations, trainers and their squads that you might encounter in the area, as well as walking you through any key steps of the story along the way.
We've also opted to break out walkthrough pages down into sections, referring to each of your visits to a given location, seeing as you often backtrack or revisit various places in your quest to become Champion! Where applicable, we'll split our page into one section for each visit, and of course if there are any, clearly mark any spoilers, too!
For more like this, be it specific systems explainers or walkthrough pages on more locations, head back to our main Pokémon Let's Go walkthrough and guide hub.
On this page:
Pokémon Let's Go: Diglett's Cave - available Pokémon, items and trainers
You can enter the first little bit of Diglett's Cave as soon as you reach Vermilion City, but go down to the tunnel itself and you won't get too far before you'll find your path blocked, with the Diglett doing a bit too much tunnelling and therefore making it unsafe to pass.
Come back after beating Lt. Surge's Gym in Vermilion City though, and the path will be clear. It's one long diagonal route north-west, with no items as far as we could tell and no trainers either - there are some worthwhile Pokémon though, and while you're here remember to catch some spare Diglett, because you'll have an opportunity to trade one later on!
Head back to our main Pokémon Let's Go walkthrough and guide hub for all our pages in one place, including detailed, step-by-step help for tough spots like Cerulean Cave, and the Elite Four, plus tough dungeons like Silph Co., Seafoam Islands and Victory Road. Otherwise, take a peek(achu) at our Pokémon Let's Go TM list and all TM locations, Let's Go's starter locations and how to get Bulbasaur, Charmander and Squirtle, along with how to get Mew in Let's Go, and how to get Meltan in Let's Go and Go too. Beyond that we also explain how connect Pokémon Go to Let's Go on Nintendo Switch and transfer Pokémon, Catching, catch combos, and how to catch Pokémon, a quick collection of our best Pokémon Let's Go tips and tricks to get you off to a great start, and finally what we know about the Pokémon Pass app distribution event too.
Available Pokémon before beating Vermilion City Gym
Available Pokémon after beating Vermilion City Gym
That's everything here for now, so continue on through Diglett's Cave until you come out the other end on Route 2's side area, which has some handy items, for the next steps in your quest, or cycle back to our main Pokémon Let's Go walkthrough and guide hub for all the other pages we have like this.