Friends of Holts Landing State Park Parks Friends of Holts Landing State Park Request Info Fenwick Island, DE 19944 (703) 881-2491 About Map About Holts Landing State Park is undiscovered treasure along the Inland Bays. Clamming, crabbing, fishing, boating, picnicking/pavillions and hiking. What's Nearby? Distance: 5 10 15 20 25 50 mi.