1) Review your configuration to make sure Google Sitemaps and other sitemap settings are enabled:
System > Configuration > Catalog > Sitemap
System > Configuration > Catalog > Search Engine Optimizations
System > Configuration > Google Sitemap
2) Go to CMS > Static Blocks. Edit the “Footer Links” static block in Avalanche.
You’ll need to add the following links:
<a href="{{store url='catalog/seo_sitemap/category/'}}">Category Sitemap</a>
<a href="{{store url='catalog/seo_sitemap/product/'}}">Product Sitemap</a>
You’re good to go now!