Add stub of alerts route

app/controllers/api/v1/parks/alerts_controller.rb

@@ -0,0 +1,4 @@
+module Api::V1::Parks
+  class AlertsController < BaseController
+  end
+end

app/controllers/api/v1/parks/base_controller.rb

@@ -0,0 +1,12 @@
+module Api::V1::Parks
+  class BaseController < ApplicationController
+    before_action :set_park
+
+    private
+
+    def set_park
+      @park = Park.find_by(code: params[:park_code])
+      head :not_found unless @park.present?
+    end
+  end
+end

config/routes.rb

@@ -1,7 +1,9 @@
 Rails.application.routes.draw do
   namespace :api do
     namespace :v1 do
-      resources :parks, only: %i[index show], param: :code
+      resources :parks, only: %i[index show], param: :code do
+        resources :alerts, only: %i[index]
+      end
     end
   end
   # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html

spec/requests/api/v1/parks/alerts_spec.rb

@@ -0,0 +1,7 @@
+require 'rails_helper'
+
+RSpec.describe "Api::V1::Parks::Alerts", type: :request do
+  describe "GET /parks/:code/alerts" do
+    pending "add some examples (or delete) #{__FILE__}"
+  end
+end